This is for Windows 8

NEW PATH
Widescreen

C:\Program Files (x86)\Steam\SteamApps\common\Counter-Strike Source\cstrike\custom\my_custom_stuff\materials\console

Put the "background01_widescreen.vtf" file into the console folder.

Your settings in Counter-Strike Source video, should be Resolution-"Native" and Aspect Ratio-"Widescreen 16:9" 

If you want the Default Screen back just delete the "background01_widescreen.vtf" from the console folder.


NEW PATH
Normal

C:\Program Files (x86)\Steam\SteamApps\common\Counter-Strike Source\cstrike\custom\my_custom_stuff\materials\console

Put the "background01.vtf" file into the console folder.

Your settings in Counter-Strike Source video, should be Resolution-"1024x768" and Aspect Ratio-"Normal (4:3)" 

If you want the Default Screen back just delete the "background01.vtf" from the console folder.
