Parallels/Boot Camp & XP Professional x64
I've a brand new MacBook Pro on it's way (specs within signature) and I'm planning on using both Boot Camp & Parallels as a means of running Windows apps, and so I was planning to use Windows XP Professional, which I know will work fine, but what if I went and used Windows XP Profession x64 Edition? What I need to know is...
* If I can use it, what are the benefits of it? Especially in this setup?
* What are the drawbacks
* Is x64 Edition backwards-compatible with regular 32-bit software?
* What common compatibility issues am I likely to encounter?
Any advise appreciated, cheers
* If I can use it, what are the benefits of it? Especially in this setup?
* What are the drawbacks
* Is x64 Edition backwards-compatible with regular 32-bit software?
* What common compatibility issues am I likely to encounter?
Any advise appreciated, cheers

Comments
Apple says for BootCamp: "You’ll need XP Home or Professional with Service Pack 2, WIndows Vista Home Basic, Home Premium, Business, or Ultimate. (No upgrade or multi-disc versions)." A few months ago, this meant 32bit versions only, maybe it will also work with the 64bit version in the latest BootCamp version, but I'm not 100% sure.
My advice: stay with XP Pro 32bit, it works very stable under both BootCamp as well as Parallels, almost no problems driver-wise, and the applications work well, too.