Here's how it works... no mounting needed, no CD needed:
1) Extract your files
2) Enter "AvP 2 cd 1" and run setup.exe to install the game
3) Enter "AvP2AllVersionsNoCDPatch" folder and copy the batch files into your AvP2 Program files folder
(C:\Program Files\Fox\Aliens Vs. Predator 2\ should be the path)
4) RUN the game via the No cd batch file just copied over...this will bypass all other checks.
5) Enjoy...easy as that!...or at least it should be :-D