Hi,
I am running BIAB 2010, Real Band and PowerTrax on Windows XP using bootcamp. I also have BIAB 2009.5 on my mac partition. Both work very well without many problems. I initially had a small problem with getting everything organized on the Windows side, but that wqs primarily due to not being familiar with Windows XP. Since ironing out midi, external drives, where to put what,etc. I have had no problems. I must say that I much prefer the Mac side, possibly because I am used to the work flow. BIAB 2010 seems to be faster that the mac version, but that said, I still prefer the Mac. My work flow is BIAB-GB-Logic Pro. On the windows side it is BIAB-RB or PowerTrax.

I am using a 20"iMac intel core duo, 3GB memory, 2.16GBprocessor, 500GB(Mac) and 1TB (XP) external hard drives. Alesis IO/26 firewire mixer. Mac partition 220GB, WindowsXP partition 30GB.
Hope this helps.

TakeCare
Bill