Windows 7: Win 7 Pro upgrade from XP Pro, Sales Misinformation & MACS.

Win 7 Pro upgrade from XP Pro, Sales Misinformation & MACS.

Hi y'all. I cannot run WIN 7 on my Compaq laptop. Too old and under powered. But I have Win XP Pro running on my Quad Core Mac. Apple says it won't have Boot Camp ready for Win 7 till December, but I started checking around today. (BTW, I never seem to have problems with WIN on the Mac like I do on my Compaq.)

WARNING on upgrade information: I asked Live "Help" at Staples today if XP Pro would qualify as a license for a WIN 7 Pro upgrade. Tech "Help" said that XP could no be upgraded and M$ recommended buying a FULL version. I don't know if that is purposeful misdirection to sell more full versions, but obviously the live desk did not know diddley. I had to tell him the difference between an upgrade process with a clean install and an upgrade license. He told me to ask M$ because he couldn't offer tech support.
BUT M$ doesn't make it helpful either when they put on the box "Upgrade Designed for Vista" implying that XP owners are SOL, and making no mention of XP eligibility on the box. Is this Balmer's idea?

My question though is, since my Mac is 64 bit, will the Win 7 64 bit be able to install on the Mac when Apple is ready for it? And can you use the transfer helper to save your XP files onto a Mac HD?