[Erg./JG54_crazty]

It works, you just shouldn't install it to the "Program Files" or "Program Files (x86)" folder, since these folders are UAC-protected on Windows 7.
Just create some dedicated folder elsewhere, maybe on another partition/drive than your windows installation, and you should be fine.

I've got my disgraced IL-2 development bitch lemon version running on Windows 7 64 Bit, Core i7, 12GB without any issues.

Best regards - Mike

Yes Storebror is 100% correct or you can simple Lower the administrator Level from control panel, but yes the IL2 Works Perfect in WIN7!