Hi narvik,
Just wanted to add that I changed over to Vista home premium from XP a few days ago and have been using TG2 a lot since then. The only problems i've had are the problems I had with XP in that a couple of times a day TG2 will stop responding and the buttons stop working and I have to force quit TG2 and reopen it, from what i've read on here it seems to be a memory leak problem in TG2 though and nothing to do with the OS. I was having driver problems with all opengl software on XP, even with the latest drivers, but as soon as I changed over to vista all those problems went away. So up to now i'm very happy with vista, it seems very stable and i've not come across any problems at all.