64 bit OS

[ReconADA]

Will this program run on a 64 bit OS?

[ShadowUK]

Yes. It will.

[FoxLeader]

I have Vista x64 and it (v6 as well as v7 demo) works perfectly.

[Canter]

Yes, but if you need to read/write to the registry and if it is going to be used on both 64 bit and 32 bit PCs then you'll need to write to different registry keys depending on the Windows version being used. You can determine that with the built in function System.Is64BitOS().