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Credits:
zakedamasa
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Okay here are the programs you need:
Install both programs then restart your computer.
Its pretty awesome.
Cs Color Scheme Editor v3.0
http://www.fpsbanana.com/tools/download/2219
You can read the readme.txt file for instructions very plain and simple.
Cs Background Maker 2.0
http://www.fpsbanana.com/tools/download/2174
Instructions:
This program changes the cs 1.6 background to whatever picture you want.
Just 3 simple steps.
0. Select Language English/Spanish
1. Locate your hl.exe file (this is the executable of cs, usually in "c:\program files\valve\"
NOTE: You only have to do it the first time you use the program.
2. Select Game Cs or Cz
3. Open a bmp or jpg picture (Dont worry about size or bit colors, program does scaling and bit depth.
4. Select Ingame Resolution For The Background Picture
5. click on "Make Cs/Cz Background"
Thats all, now you can enjoy your custom background