I have XP Home on NTFS too & PBooost works perfectly has done since I bought it months ago. I didn't need to fiddle with the Compatability Wizard either, in fact I've had only 1 program that needed the settings changed in the year I've had XP. It's a good point tho, I wonder if the Compatability Wizard is in Win2K as well (seems to be the worst for not liking PBooost) maybe someone with it will let us know.