Hi,
I think my Windows was broken, I tried to install FarCry, and the setup wizzard didn’t finish, too(I think it uses InstallShield not MSI).
So there was a problem with my Installers :)
I think I fixed it.
I took an Knoppix DVD and did this:
mkfs.vfat -F 32 /dev/hda1
:P at the moment im reinstalling Windows. I think the fresh installation won’t have this misterious installer bug.
PS: for those how aren’t familar with linux I formated my disc :) (like format c: )