Gonna be kind of hard. First, there is no Service Pack 3 for Vista at all. Second, it doesn't matter if its Home Premium or any other version. All the same stuff basically at heart
Yep, sp2 is current, we'll get to 3 in six months? Longer I hope. I use Vista Ultimate and am very satisfied, 7 is not ready for prime time yet. Just my 2 cents. Cheers!