Upgrading XP Pro to Vista Beta2 on Mac Book? (Score 1)

Please forgive me if this has been posted already - but it's late (up almost 18 hours already - too tired to read all the threads), but anyone try upgrading the XP partition on a Mac Book or any other Intel-based Mac? if so, any gotchas you'd like to share? I rarely use the XP partition, but thought it'd make a good test bed. Off to dreamland - good night all ./ers.