Time to dust off your old X-Wing, Tie Fighter, X-Wing vs. Tie Fighter and X-Wing Alliance CDs.
I've just finished writing my guide on how to get these games running on Windows 7 (both 32-bit and 64-bit). This guide should also help you get it running on Vista or XP if you have problems but I haven't explicitly tested on those platforms (I mainly tested on Windows 7 64-bit). This guide also includes help on how to get the DOS versions working of X-Wing and Tie Fighter if thats your fancy (especially if you want to experience the games using iMuse).
I've included how to get the games working with an Xbox 360 controller in the guide since that's the most ubiquitous controller around, but you can also use a flight stick ;)
If you have any troubles getting things running just drop a line here. I'm just hoping I didn't screw anything up.