it's very easy guys, thanks to the guy in xda furom who made this. just follow the steps he mention.
here's how i did it.

1. In settings > wireless and network >USB settings > tick Mass storage.
2. connect your phone to PC.
3. paste "Root-i9001-Signed" in internal sd card.
4. Disconnect phone from PC.
5. In phone settings > applications > development > tick USB debugging.
6. Reconnect again your phone to PC.
7. Extract "Easy Reboot Recovery" and click on RebootRecovery and wait for about 2-3 seconds, phone will auto reboot.
8. Once when you see the icon of box and the android guy logo, press menu!
9. A new windows will open will a few options.
10. Use Volume buttons (press down) to choose apply update from sdcard
11. Press Home Key
12. Use Volume buttons to choose Root-i9001-Signed.zip
13. Press Home button to start update.
14. wait 2 seconds and Root will be installed. (you can see after that it will say sucess)
15. Choose reboot system now and press Home button to reboot your phone.

viola! you'll see a superuser app in your phone and its rooted!


This post has been edited by niesma84: Oct 11 2011, 05:38 PM

credited to benny888 (Samsung G S2 thread)

MAXIS

1) Home -> Menu -> Settings -> Wireless & networks -> Mobile networks -> Access Points Name
2) Menu -> New APN
Name = Maxis(3G)
APN = unet
Username = maxis
MMSC = http://172.16.74.100:10021/mmsc
MMS proxy = 202.75.133.49
MMS port = 80
APN type = default,mms
(Others, leave blank)

DIGI

1) Home -> Menu -> Settings -> Wireless & networks -> Mobile networks -> Access Points Name
2) Menu -> New APN
Name : DiGi Internet
User name : digi
APN: diginet
MCC: 502
MNC: 16
APN Type: default
(Others, blank)

NOTE : If you subscribed to Digi Internet Prepaid package ( RM2/day package ): the APN is : 3gdgnet

DIGI MMS

APN: digimms
username: mms
password: mms
Proxy: 203.092.128.160
Port: 80
MMSC: http://mms.digi.com.my/servlets/mms
MMS Proxy: 203.092.128.160
MMS Port: 80
MCC: 502
MNC: 16
APN Type: mms


CELCOM

1) Home -> Menu -> Settings -> Wireless & networks -> Mobile networks -> Access Points Name
2) Menu -> New APN
Name : Celcom 3G
APN : celcom3g
MMSC: http://mms.celcom.net.my
MMS Proxy : 10.128.1.242
MMS Port : 8080

Other settings you can try :

Celcom 3g internet setting :

Name : Celcom 3G Internet
APN : celcom3g
MCC : 502
MNC : 19
APN type : default

Celcom 3g MMS setting :

Name : Celcom 3G MMS
APN : celcom3g
MMSC : http://mms.celcom.net.my
MMS proxy : 10.128.1.242
MMS port : 8080
MCC : 502
MNC : 19
APN type : mms

Celcom 2g internet setting :

Name : Celcom 2G Internet
APN : celcom.net.my
MCC : 502
MNC : 19
APN type : default

Celcom 2g MMS setting :

Name : Celcom 2G MMS
APN : mms.celcom.net.my
MMSC : http://mms.celcom.net.my
MMS proxy : 10.128.1.242
MMS port : 8080
MCC : 502
MNC : 19
APN type : mms

This post has been edited by niesma84: Oct 16 2011, 09:37 PM