Never tried this but was curious if it would work.  I really don't want to reformat for XP MCE but might swap drives if I can't run both with a dual boot setup.  Any suggestions?  Anyone tried it?  I currently have three hard drives in my system so swapping them around to run MCE isn't much of a problem.  Is MCE much different from XP PRO?  I mainly want it for transferring stuff to my xbox (and to the PC if possible).  Let me know if I can do this.