hi i have question? how well dose copy and paste over same version of os but from 32 to 64 bit. or should i use program like pc mover to do that. i have hp pc and it os is windows vista home premium 32 bit. and what i like to do is copy all file (ctrl-c) that came with hp pc even the programs that it shipped with, on to external drive then install fresh copy of windows vista home premium 64bit, then paste (ctrl-v) the hp pc from external hard drive over the 64 bit and replace the copy file when asked.