w7

[swiss]

You should be able to install even from drm DVDs, the file to use is the a.exe(or something like that)

[Madfish]

The only thing that might give you trouble on W7 x64 is actually not the game but older hardware. For example older joysticks (x36 USB for example has no driver for w7 x64 anymore).

So if all your hardware is w7 compatible you're fine. And yes, I can only second the advice of not installing it to the standard programs folder. In fact I created a partition just for games and this way it's working fine.

I'll add my confirmation to what the others are saying about staying out of programs folder. IL-2 has been running well on my new W7 X64 for months now. Installed on secondary hard drive.