I got Win 7 Pro installed on my Dell lappy. Its a fairly beefy machine (Centrino Duo & ATI Mobility X1300) but only a 1 gig of ram and I'm running it with all the Aero bells and whistles, desktop gadgets etc and its fine..

Over the next few days I'm gonna get my Audio Kontrol installed with Vista drivers, get Ableton up and running and get all my VSTs on the go so will report back on how it goes ;)