Installation:(English)

Unpack this File and Drag it into C:Programms(x86)\Steam\SteamApps\Yourname\Counter Strike Source\cstrike\maps

German:
Entpacke die Datei und verschiebe sie in den Ordner  C:Programms(x86)\Steam\SteamApps\Yourname\Counter Strike Source\cstrike\maps

//my Steam Name:Ted (or the real :andreasheim98)
//Thanks to all :)