I have an Hp Pavilion model a6110n with the original Vista Home premium OS 32bit and key. My plan is to upgrade this pc with a new motherboard, cpu, memory, os version and psu. I plan on using the same hard drive that the vista home pemium is on, but i want to ugrade vista home premium 32 bit to vista businesss 64 bit. I will be using a hp Operating System DVD for vista business for the upgrade. Question is, is this possible? and can it be done with the original key?