....

or, you could create a separate partition on your Vista machine and install Win7 RC there as a dual boot. When the RC expires on March 1, 2010, you can reclaim the partition and still have your Vista intact.

I say this since this is what I did. I've triple boot my laptop: Ultimate Edition Linux 2.2, WinXP Home and Windows 7 RC. I don't want to ditch my XP Home as it's legit (sayang naman.) As to Vista, I've never been impressed with it on our office laptop. But ever since I let my curiosity of Windows 7 got the better of me, I'm slowly becoming a fan of it.