Same from either side. Start at Russian Embassy with basement. Tunnel connecting each embassy with 2 psp's in the tunnels. Tunnels also fork off and lead to buildings and towers, with a psp, behind each home spawn area. 3 options for fighting, go to the roof top for close-in cqb or gunner, fight in the tunnels, or go to the towers behind and snipe.
EDITED: 5-14-07 PSP's in the tunnels were lowered. Sometimes you would spawn above ground.