extract contents to your counter-strike source\cstrike directory. the .nav file is included for bots.
then just launch the game and have fun! :)

The map is a small fy map with symmetrical quality to it. The terrorists start on one side and the CT's the other.
The middle openings are covered with breakable glass. Spiral stairways are included at the spawn points which lead up to the upper levels
On top of the walls there are a second set of stairways that are especially good for snipers if you can survive. There is a little secret
to be found once you reach the very top.