Good luck with it. Personally, I love it! Is it better than XP? Yes. If you have XP, do you need to switch to Vista? No, but it looks like MS is cutting support for XP soon, so... I just hope MS starts pushing Vista x64 more so there will be more support. That said, there is actually quite allot of support for Vista x64. I'm running most of my 32-bit programs under Vista x64 and all the important programs like burning software and antivirus...etc, all have either 64-bit support or the 32-bit programs work. I would like a really good 64-bit software firewall, but Vista's is pretty good, plus I have a router so I'm secure.
I read that Vista's service pack 1 should be out any day now.