Should be fine, vista is already dubbed the fowl demon spawn of Microsoft before anyone can test it for themselves, as usual they lap up what the mass media tells them to think. "Vista = MS so therefore Vista = Bad". I run vista 60% of the time, the rest is spent in XP and it honestly isnt that bad, the few things bad with ti are picked up on by the media and fanboys and magnified ten-fold simply because its microsoft and they can never do anything right in the eyes of the sheepish consumer...
But enough of me ranting, down to the specs, you might want a tad more RAM in there, like 1Gb to run it real smoothly, the rest should just about do, what graphics card do you have in there?
dragon