There was a Pro 32 bit and a Pro 64 bit. There were OEM, retail and VL issues but those didn't differ in operation. I wonder if you're talking about some service pak level. The last was SP-3. If that's what you want, you download the service pak and install that by itself. Of course there have been numerous updates since SP-3 was released so the whole process will take some time.
Can anyone walk me through or provide a link to switching XP versions? At the moment, my laptop has XP Pro (from '02) installed.
But I have a disc ready to install a later version of XP.
Do I have to uninstall the old one 1st? Just pop the new disc in?
Thanks for any help.

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