For you to take the Professional Assessment Examination (PAE), you have to be registered with BEM for 3 years. IEM is just a society of engineers. BEM is the regulatory board.

There are 2 ways to obtain your PE (Ir.).

1) Mentoring system, this way you have to become a graduate member with IEM and request them to assign you a mentor. For the next 3 years, quarterly, you will have to meet up with your Mentor and discuss what you've learnt over the past 3 months. And also fill up your log book. Very very tedious system but sure way for you to learn throughout your 3 years.

2) Submitting a design report - After 3 years of experience (usually 5 years would be a good time to apply), you will have to fill in the necessary forms and write 2 reports. 1 report would be the Experience report of what you've done throughout your working life, sort of like a resume. The other report is the design report which during your working career, you choose a project that you were involved in and write about that. So it can be anything from designing a pump system for mechanical engineers, designing a water treatment plant for chemical engineers, etc. Then you submit both your reports to your Interviewer and then you will go for the interview where you will be questioned on the design report just to make sure that you didn't copy it. Depending on the interviewer, you might just fail there and then if you don't know basic stuff. After the interviewer is satisfied, you will be required to write 2 essays. 1 with regards to your design report and 1 from the Code of Ethics.

Let me know if you need help. I hope I didn't confuse anyone further.

For me, I never was an IEM member until i sat for my PAE. So I actually applied to become a Corporate Member instead of the normal process of converting your Graduate membership to a corporate membership. I didn't see the need to waste my money for 3 years when my company would pay for me if i wanted to go for trainings hosted by IEM.

There are two ways to become a professional engineer in Malaysia:

a) Through BEM ===> By sitting for their PAE (Professional Assessment Examination)

    - In order to be able to sit for their PAE you MUST have a minimum of 3 years of working experience.

    - Your 3 years of working experience ONLY STARTS counting after you have registered with the BEM.

    - Eg. In the year 2009 you have been effectively working for 10 years but you have registered with the BEM only in 2008. That means you only
      have  1 year of working experience in their clock. Therefore, all fresh graduates please register with the BEM ASAP after your graduation. It is
      supposed to be illegal for you to work in the capacity of an engineer without a registration with the BEM.

    - The second requirement before you can sit for their PAE is to complete 60 hours of BEM mandatory courses known as the PDP (Professional
      Development Programme). PS: My abbreviation for PDP may be wrong.

    - Once you have sat and passed the PAE you will gain your P.Eng and hence, entitled to use the title Ir.
      Eg. Ir. Dr. Jeffrey Han B.Eng(Hons), Phd (Mech), P.Eng
b) Through IEM ===> By sitting for their PI (Professional Interview)

    - Before even talking about the PI, a fresh graduate is encouraged to register with the IEM as a graduate engineer. Once you have registered with
      the IEM as a graduate engineer, you are entitled to the title Engr. As simple as that.
      Eg. Engr. Dr. Jeffrey Han B.Eng(Hons), Phd (Mech), GM.I.E.M

    - Once you are a graduate member, you can then proceed on to become their corporate member which consists of the bulk of the IEM membership.
      Note: It is not mandatory to become a graduate member first before becoming a corporate member.

    - In order to become a corporate member, you have to first sit for the PI.
      Note: The PAE by BEM is EXACTLY the same as the PI by IEM. In fact the PAE is run by the same people that organizes the PI.

    - In order to be able to sit for the PI, applicants SHOULD have at least a minimum of 3 years of working experience. It will be virtually
      impossible to pass the PI if you have less than 3 years of working experience since you will most probably have insufficient materials to be put in
      your report.
      Note: It is not necessary to become a graduate member first before you can sit for the PI and there is no IEM clock that counts your working
      experience. If you have been working for 10 years, you will then have 10 years of working experience as far as IEM is concerned.

    - Once you have sat and passed the PI, you are entitled to use the title Engr. (Same title as the graduate engineer)
      Eg. Engr. Dr. Jeffrey Han B.Eng(Hons), Phd (Mech), M.I.E.M

    - Once you have your Engr. (M.I.E.M) you can then proceed to top up with the Ir (P.Eng) from BEM. There are two scenarios:

      ===> If you have not registered with the BEM, go register with them and wait three years before getting your P.Eng. You must also complete the
                60 hours of BEM mandatory courses known as the PDP.

      ===> If you have registered with the BEM and have three years of woking experience according to their clock, you can get your P.Eng.
                immediately. You must also complete the 60 hours of BEM mandatory courses known as the PDP.

      Once scenario 1 and 2 are covered, you will have the privillege to use the titles:
      Eg. Ir. Dr. Jeffrey Han B.Eng(Hons), Phd (Mech), P.Eng, M.I.E.M ===> Normally people will use Ir. only if they have both the
      Ir. and Engr.

Notes:
1) If you have to approve or/and submit layouts/designs to the approving authortity, P.Eng is mandatory. But if you are working in the manufacturing sector for instance, you can opt just for the M.I.E.M. Getting either/both the P.Eng or the M.I.E.M is a great personal satisfaction if you ask me and they look absolutely fabulous on your resume .

2) Once you get your P.Eng from BEM, you will have to renew your "license" every year in order to be able to continue to use the title Ir. Before you can renew your license, you must complete 40 hours (I may be wrong) of CPD (Continuous Professional Development).

3) Feel free to add/correct my points as necessary.

Right now only IEM conducting PE interview. BEM is no longer doing this. Pls correct me if I were wrong on this. This is implemented since few years ago.

Answer to Q1:
You can go ahead to register without your cert. Once immediately after received your cert, you can supplement back. Write a simple formal letter to indicate this intention during submission of your BEM application form + fee, etc.
I did this in year 2004 or 2005, can't recall. Shall be same right now.

Answer to Q2:
Pls register with BEM & IEM first before you go register with IES. [Anyone, pls correct me if I were wrong again]
Refer to here Engineering Stature

Washington Accord

for SG to be a PE isnt so simple. 1st your uni need to b recognized by the PE board whole of msia only UM is recognized even then they only recognize the Electrical and Pure Mech only. manufacturing mech is not recognized

then u need to sit for 1st paper which is mostly your uni day's exam ques if u r elec the paper will hav fault cal, transmission systems, etc.
mech ones  u hav heat transfer, thermodynamics etc.

after passing the 1st paper u need to sit for the 2nd paper which consist of mostly design and codes since u're working in sg i'm sure u know sg has damn many codes.
after 2nd paper 3y xp with local completed projects and a report need to be done b4 u can submit and attend the PE board interview. they'll interview u on your report n work xp.

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Added on November 24, 2010, 9:33 amiirc BEM dun open on sat. but u can always call up n ask. and iirc u can mail them your application however, make sure its complete.

anyway meaningless since u work overseas u cant attend the courses they offer to collect the points.

I think so, you must registered with BEM first. Then only proceed to IES from what I understood from here or maybe provisional:

http://www.ies.org.sg/pageview.php?page_id=110

The best to clarify this is contact them too to check the above mentioned since you are now in Sg.:
http://www.ies.org.sg/contactus.php

Pls. keep us update if IES accepting your membership after your registration to BEM approved.

Agreed with nicvoo, you can post them. Sat I do not think they open.

I am not an engineer but I found this thread is very interesting. Can anyone tell me how to qualify as a Chartered Engineer (UK)? Any idea about the Institute of Engineers and Technologies (IET, UK) and Engineering Council, UK. Can anyone who only has an Advance Diploma from a local private technical college call themselves an engineer and be admitted as member of the IEM/BEM?

yup CP 1-100 also go SS dunno wat to wat fire code summore got 6volumes iirc.

great cont dreaming it'll b on weekends didnt u know msia is 5 working days only? lol even in sg the courses/seminars for PEs r on weekdays

btw u get IR in msia can only practice in msia u get PE in sg only can practice in sg

not sure about chartered. chartered eng only recognised in hk,aussie uk i hear

anywya y wanna get an IR or PE? nowadays its damn worthless not to mention the amount of responsibility especially in SG

u sure wif a PE u can get high pay?
simply jus sign any bloody drawings tat comes in your way?
well no wonder the industry in getting from bad to worst with the mindset of yours

wanna get high pay u join wrong industry already

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Added on November 25, 2010, 9:42 amnot really mission impossible to get PE in sg u can take a masters course in nus or ntu then u can qualify to sit for the exams

nah..dun blame u
u haven been in the industry long enuf

RE dun need a PE unless u r civil
+ not many projects hav M&E RE
work wif contractor as consultant no pe also can enuf xp can already y the contractor wan a PE on their side? wan u sign drawing only ma wan u to design meh their design many times more practicel n better then yours.
open own firm?jus c the amount of competition 1stly, 2ndly your network
in msia u dunno a few dato YB tan sri jus bcos u r PE u think can get job? lol
if u hav connections u dun need a PE already u can hire a PE to get him to sign u only go find jobs.
in SG how can u compete with the big companies? BECA, PB, TYLIN, Meinahrdt, Aecom unless u say u can offer wat they r doin at half their price else jus do small small jobs
in msia dun say every bugger is a PE every bugger is opening their own firm producing crappy drawings

to me if u wanna b a PE for the pay is a very stupid reason 

IEM Southern Branch, you may try to put your address at JB, then any updates/seminars, they will notify you.
http://www.iemsb.org.my/

nicvoo has mentioned lot of things happening at site from RE's point.
Lot of RE handles C&S + M&E, depends on project scale.
Sometimes, C&S RE with Ir. at site will hand-sketch modify the drawings from HQ consultant & implement at site. He will sign the modify drawings & feedback to HQ (the designer) due to impracticable design.

That is one of the many reasons I left consultant after 3 years plus in M&E (2.5 years design experience at M side from high rise building to infra [prepare tender doc, plumbing, sanitary, lift + escalator, natural gas, ACMV, fire protection, T&C, SAT], 7 months plus full time based at site as inspector) & join oil & gas.

Just for your info, my knowledge is slightly better than a Ir. when i joined a consultant company last time. Even 1 of my seniors without Ir. far far better than a Ir. Not boosting, it is a realization when discussing design & actual practicability come to site implementation & construction stages, tender document...there are lot of things happening at site, it is not like design in office.
The value of Ir. for me is??? Unless you join back consultant firm.
Singapore with Er. is very lucrative if as part time & as 3rd party inspector/certificator but the "heavy responsibilities" are there in case unlucky events happened, touch wood...

yes many experienced ppl b better then IRs or ERs y they dont take the IR title? simple they dont wan to wake up 1 morning n get sued.
well tats y i say i dont blame u i've seen many who r like u amongst my colleagues and friend they think getting an IR title means they will b highly paid n can goyang kaki. the truth is totally opposite. worst still in sg where if u get an IR n dont wanna sign cos dont wanna take the responsibility the authorities will revoke your title. especially for FIRE designs
yes tats the truth but you always have the choice to take or not to
only in the construction industry Irs are required. Mech Elec n Civil
the a Qualified person is required to endorse the design. u dont wan a switch board to blow up in your face do u?or getting a black out everytime thers a storm or during fire the spinkler system n exhaust dont work or a building to crack n collapse when u r in it right?