ghost recon problem

[nick6878]

i am having trouble with ghost recon and the desert seige expansion pack. i have a fixed version of ghost recon and it is put in the registry or something. its like a cracked version or something. I scratched my original version and didn't make a backup yet so i did that. i tried to install the desert seige expansion pack and it keeps saying i need to install ghost recon first. but it is installed and i can play the game fine. anyone know how i can install the expansion pack? thanx