I just bought a computer that come with Vista Home Edition installed to replace a computer that crashed. (I was nable to find any with XP.) I legally own an older copy of the MSDN, about 2002 vintage. I tried to install MS Office XP or 2002. The installation asked me for the registration key, accepted the one I gave it from my MSDN disk covers, and installed ok. Or so I thought. When I tried to run MS Word, the system pops up an error message about needing a registration key, which I type in, and then it refuses to run saying I need to give it a correct key. Does anyone have any idea about what is going on and how to fix this? Thanks for any ideas or help.