Greetings. I'd like to hear some opinions from first generation mac pro owners who have used the Apple x64 drivers for Boot Camp. I am thinking of upgrades later to my RAM and would like to use about 4GB for both Mac and Windows. I am currently at 2GB. I also have the 64 bit drivers in hand. The upgrade process as described by MS sounds daunting. I currently have a full license to Windows XP Home, and have an upgrade version of Vista Home Basic 32 bit. I have sent away for the 64 bit Home Basic upgrade disc of Vista. MS says I need to do a clean install and run the upgrade from the DVD disc itself. Would the Boot Camp assistant be able to boot into the Vista 64 bit upgrade disc and allow an upgrade over the 32 bit Windows XP? Or do I just do a straight boot from that disc? Doing it through the straight method of booting on the DVD worries that I may screw up my OS X Leopard. I'd appreciate any thoughts or tips. Thanks.