Dear Experts, I developed an app (Delphi language) on my Windows XP computer and packaged it up using my installation software ("Install-Us" - now regrettably discontinued). Anyway, testing it on my computers (both XP), everything installs fine, but a user of mine who runs Windows 7 is having big problems - my install package won't install its files to his \Windows\System32 folder. It installs all other files fine, but files just don't get written to \Windows\System32. I logged into this users computer today to troubleshoot, but since I've never really user Windows 7 before, I'm kind of stumped. I have a feeling it has something to do with "Administrator" stuff or something like that, but I don't know. Would you have any ideas?