Okay, first I tried installing patch 405 and it would tell me that unreal wasn't installed in the directory where it was...then I installed infiltrator withouth putting the patch it. Infiltrator wasn't working, so then I installed the 405 patch and the installation seemed to work. But now when I go to start unreal it tells me to insert the CD, which is already in the drive. What should I do to make all of this work?