It should be there if you're using XP. If not, you need to grab something like winzip.
Anyway, some general feedback on the map:
- It needs more than one path. The high path isn't really that accessible, and is very limited and needs lighting.
- There's a lot of really unrealistic stuff that kills the atmosphere, like massive ladders. One is even made of sand.
- Textures need to be rotated in many different locations. Some things could stand to have a texture other than the wood planks, too.
- Red flag stand uses tiles, blue uses wood (minor detail).
I can run through it with a demo and be more specific later, if you want. This should really be boxed_b2.bsp or boxed_beta2.bsp. If you want to follow the guide and work on turning this into a good map, I'll upload it to the beta server for play testing.
Edit: My net connection died and there were like 10 replies since I tried to post this.