I had Vista on a dell laptop I bought. Stayed on there for a few months until I got fed up of stuff that should fly on it running loke a dog.
Put XP on there instead as still had a dell XP disk from my last laptop. It was like habing a new super duper laptop
Runs like a dream.
Forgot tyrying to run Vista with anything less than 2GB of ram.
Saying that I had Vista on my Dual Core AMD 4200+ with 2GB of ram and it crawled on there too.
XP in my opinion is the best OS they have made, yes even better then Win2K.