Call Dell suppot and ask of the 64 bit dic but it will be the macth to the windows you now ! If you live in the USA call here If you live outside call your support team where you live. I hops this get to you without all of the errorsmessages  i have been getting !  Good Luck to you and me too
I've been looking into upgrading my PC to Vista Ultimate x64 and was wondering if there's a way to get a 64-bit copy of the Dell OEM Vista disc that came with my computer. Anyone know if that's a possibility? Or would I just have to buy the full version of it.
Vista Ultimate 64-bit