On the daul 32/64 basic, business and premium editions only the 32-bit actualy comes on the DVD with 'info on obtaining 64-bit DVD'. So what's the info on obtaining the 64-bit, do you have to write off and get it direct from M$? And is there any licensing issues on migrating to and from 32 or 64 bit? Can you install/uninstall as you see fit?