I got so many friends complain to me that their pc is slow, they all use Vista. I stayed away from Vista, it seems to be a bit of a red herring OS much like Windows ME was. I too shall wait and see what windows 7 turns out like. For now i am running an xplite version, only 190mb on the disc, very quick, am using just 1gb of memory.

Cant partition magic sort that out for you mate?

http://en.wikipedia.org/wiki/PartitionMagic

Or just make a new partition on your HD, install the Beta, try it, if you don't like it, just delete the partition.

I used a beta of internet explorer for more than a year on my old pc, I actually like that beta version better than the official release that came out later...