I have read that you can use a key for 32 bit vista in a 64 bit vista DVD. I am hopefully going to be building a desktop around Christmas, and I don't think I can afford to buy Windows 7 if I want to get a decent PC. I have a 32 bit DVD of Vista, but I have heard that you can use a 64 bit disk and put in the code for the 32 bit version. Is this true? I would also like to know if there was any other way to do this and how I could get a DVD cheaply or for free. I will need the 64 bit so I can have 8gb of RAM. Thanks for any help!