Extract to install location, usually C:/Program Files/Valve

Special thanks to:

Khader and Jamil, for beta testing.
Sum-182 Clan, the best clan out there ;D
Alexandro "Aless" Montanari, for designing the verastage.wad used in the map. 

verastage.wad was wadincluded in the .bsp file.

-D'gafo