this is for the sound folder..follow ur steam folders up to the one that says weapons u have to make that inside of the sound folder all sounds go here
C:\Program Files\Valve\Steam\SteamApps\uremail@yahoo.com\condition zero\czero\sound\weapons
all weapon mdl files go here
C:\Program Files\Valve\Steam\SteamApps\uremail@yahoo.com\condition zero\czero\models