Windows Vista, Limited Accounts and SMC

That won’t help - the problem is that the EXE is marked in its manifest as requiring administrator level access (perhaps because the programmers are lazy, because I can’t see any reason why admin rights should be necessary). You have just told the poster how to open up NTFS access rights, which won’t fix the problem, because it’s not where the problem lies.

The application needs to be rewritten to work properly in a restricted-user environment (not just for Vista). It should not require administrator access.