only if you can bear with plenty of noob question from me. 
I just want to know what custom ROM for PRO?
- currently only got cyanogenmod CM7 for Pro, but not stable.

How to flash ROM and custom Kernel?
- flashing rom is through either recovery mode or Flashtool. installing custom kernel is only through fastboot mode.

Is install zip file from SDCARD consider flashing too besides using fastboot command prompt?
or other software?
- because the zip file contains the image of the ROM, and that is called flashing. using command prompt is just script-based method. other software is like 3rd party software called "Flashtool".

Do I actually need a custom kernel?
- custom kernel often comes with recovery apps, such as ClockWorkMod. for me it is essential as it contains Nandroid (a recovery program which 100% backup EVERYTHING from ur unit and Recover back 100% exactly how it is in future), and is part of a must if u are a custom ROM modder/ app tester.

If things start getting worse, what do I have to do? like steps by steps.
- what do u mean by 'things start getting worse"?

is everything in the file you provide on root guide will be useful in the future?
- those a Must-have files for rooting and flashing. if u wanna root, or flash, u need them.

mann, I fell bad asking you this many question. 
but more will come tho for me to better understanding this root thing. 
- feeling bad? Donate then. LOL

Jailbreaking easy to understand but I want challenge. 
- Rooting is equivalent to Jailbreak. Rooting means going deep into the system, just like a tree's root going into the earth deeper and deeper.

Or can consider root as getting actual access rights, just like your PC Windows; You gain full access control.
The term jailbreak because iOS is far too strict, imagine if you buy a laptop and the Windows account given to you only "Guest" account with limited access rights and many restrictions.  Hence why many people didn't like iOS or what it did.
When you got more control of the user's action, you get less problems and more stable system.
When you give more control and power to the user, it's harder to control and maintain, thus hard to ensure the system is stable.
With great power comes great responsibility. It good to have control on the user, but it doesn't mean the user should forever stay in that level and never improve or learn. So, there should be option for the user to unlock advance more or administrator mode. You buy the device, but only given limited access rights, that didn't sound right (well, at least for me).

u got ur point there but not exactly the 100% meaning behind root. LOL.

IMO, rooting is like modification. say..u got a PDF file with plenty of words inside there. tiba2 u find something in correct, or maybe not to its quality, or there is still space for improvement in the essay, and THUS u wanna edit the essay in the PDF file.

by right, a pdf file is a fix doc. u cannot edit anything in a pdf file. HOWEVER, u can get aftermarket software/programmes to CONVERT the pdf file to words doc. so the process to make it accessible where it no longer retain the original state of the essay and file format is somewhat like rooting an android unit.

You gain access of the original content, alter its format, modify the content whichever u think it is suitable or better than the original, then the end.

ada paham? tak paham jangan tanya.

Let's put in OS perspective since it's OS. By default, when you buy an OS, you should have root access granted, even if DEFAULT it's not enabled. So, not really I would consider modification, more like unlock or gain full access.
In terms of OS, with root access, you get full access and priviledge; Without root access, maybe you're just a power user, etc. in short, limited access right and priviledge.

welcome to the club bro. What's ur color? AP or Ori set?

Yo.,thanks bro..only u notice me.hahaha
my pro is black, AP set but get ori package in the box (weird )..hahaha..
juz wonder, did all of u guys root ur phone? i believe it will void ur warranty wasn't it?

Hahaha. No problem. I think not all rooTed their phone. It's an option. I myself haven't root yet. . Needs to u'stand more since this is my 1st android.
Just experienced my 1st auto restart. Reset the phone to factory settings and monitoring.  Guessing one of the apps.

A week got my PRO I already rooted it.     haha
and also, this is my first android too.
Last time bought myself iPod touch 4 , within a week I already jailbreak it.

u root ur pro wont void meh the warranty?

im newbie here..just bought se neo  v last week.so far all good 4 me..act,nk bli neo but xde plak yg caler bru gradient,so g neo v..ad klbihn n ad kkurangn neo bndg neo v.neo ad 8mp camera but xda xloud(4better sound).neo v just 5mp n have xloud..so your choice.:-)

of course void warranty la. 
but I just can't help it. The eager to root although there's not much interesting things I found right now.
I don't know, maybe I'mma bit risk taker.

Hi all,

I'm newbie here..
I'm planning to buy neo v this month, I wonder is it worth to buy any sony ericsson product? because there will be no more SE but SONY only...?

Y don't want to get original Neo v?

im newbie here..just bought se neo  v last week.so far all good 4 me..act,nk bli neo but xde plak yg caler bru gradient,so g neo v..ad klbihn n ad kkurangn neo bndg neo v.neo ad 8mp camera but xda xloud(4better sound).neo v just 5mp n have xloud..so your choice.:-)