I don't know, whether is has been mentioned here before:
I am glad to confirm that Stonekeep works with Windows 7 Home Premium (german edition here). I use a Realtek onboard Sound device, ATI graphics (HD4770), and a 23,6" Display at 1920*1080 (yeah - it's a bit wide for these g.o.g.s, but it's still okay).
Not a single problem right out of the box - Thanks Gog.com team!
And now: back to Stonekeep ...