i want to try out my pentium 3 which does'nt have a hardrive. Can i move a hardrive from my pentium 4 (with windows xp installed) to my pentium 3 and then move it back to my pentium 4 without any harm done?. will my pentium 3 then load on windows xp when i connect the hardrive? also what bios settings do i have to do? thanks for your time.