i've installed windows 7 on dell, lenovo and hp computers and today i just completed the installation on two new dell latitude e4300s.  desktops and laptops, tablets and notebooks, haven't installed it on a netbook just yet, but that can't be too far away.   i will install it on my older toshiba notebook with 1 gb ram this evening.  until i started demoing our client virtualization technology med-v (microsoft enterprise desktop virtualization), this smaller tablet pc was my primary demo box for windows vista and vista sp1 (i've got one other system that i still run with 1 gb of ram that i haven't installed windows 7 on - maybe i'll get around to that one this week as well).