im pretty sure its agaisnt the microsoft eula to install the os on 2 computers at the same time. i dont see why it cant be done, as i have used the same os on several computers, just never at the same time.
I bought a new laptop that has vista installed, my desktop has xp home and not only do I like it better, I would like to keep both computers on the same system. I still have my reinstallation disk from my desktop for xp home (service pack 1a) can I simply uninstall vista from the laptop & run the xp disk to install xp?
Would it also be possible to keep microsoft office on the laptop with uninstalling vista?

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