Here's my scenario (events happen chronologically): - 2.4ghz 2010 unibody MBP 13" - installed Windows XP (w/SP2) via boot camp (2 partitions on HDD currently) - installed Parallels 5.0 on Mac HDD - made a VM thru Parallels w/ existing XP OS from boot camp partition Before I ask main question, the way I am running my VM right now - via boot camp partition - is that faster than if I had not created a boot camp partition and instead just installed Parallels and THEN used that to create an XP VM? My main question: Would my MBP run faster/equal/slower if I install Win7 Ult? Should I delete my boot camp partition and just install Win7 via Parallels or should I install Win7 onto the boot camp partition (overwrite XP)? Also, should I install Win7 32 or 64 bit? Thanks in advance for responses!