Hey, hope you like my gRoOvY knife!

All you need to to is cut and paste or extract it into this folder:

C:\Program files\ Steam\SteamApps\Steamaccountname\counter-strike source\cstrike

Then restart steam and your set!

If the above dose not work, follow the folders in my Rar. file until you see weapons. 
Highlight and copy them not go to C:\Program files\ Steam\SteamApps\Steamaccountname\counter-strike source\cstrike .
Now in that folder you will see "Materials" open this and then models then weapons, now paste the folder "Knife_t"in there, restart steam and 
they will be there in game.

Made by The_Muffin_Man