Exactly how many applications do I need, and what kinds? I know there’s compiler, code editor, and maybe more.
I think I’ll speak for most of us that we’re using Microsoft Visual C++ to compile the W:ET’s source code.
Does PB affect modding? And what do I do about it to make them both work?
Punkbuster won’t affect modding, and that goes visa versa.
Using Win vista, is it better to wait until next month when there’s a new service pack, maybe to see how backward compatibility adjusts for one reason, before I try to do any coding?
For as far as I know, Microsoft Visual C++ is already vista compatible, learn more at:
Is Wolf ET the game, programmed in C, C++ or other? Can ET be programmed in C, C++, and more languages?
Wolfenstein: Enemy Territory, is based on the Quake3 engine, which is all programmed in C, and C only.
Do I need a very powerful computer to do this?
Not at all, compiling a source code doesn’t require that much.
Anything else I should know?
You can download the W:ET’s source code at: http://returntocastlewolfenstein.filefront.com/file/Wolfenstein_Enemy_Territory_Source_Code;23091
However, there are already opensource mods like ETPUB, that include more functions than the original W:ET source has.
For more information about modding, you can go to: http://code3arena.planetquake.gamespy.com/
Code3Arena discusses Quake3 Modding, but since W:ET is based on the Q3 engine, most of the tutorials will help you get busy.
Also make sure you read the articles, so you understand what ‘entities’ for example are.
And if you still have questions, this forum will provide you enough information, IF you ask the right questions 
Good luck,
Dutchmeat
