Download and extract the files (2)
paste the two files "background01_widesreen" "background01" into Steam/Steamapps/Your User Name/Counter Strike Source/cstrike/materials/console (mabey need to create a folder called "console"
take up css and your done grats!!
Reason i got both "background01_widesreen" "background01" is becuse background01 dosent work for everyone, so if add both it will work.
Want to take normal backgrond back?? just remove the files from cstrike/materials
Want to take away CSS Logo ?? Watch this