I have 3 windows xp home lincense key in the office, I installed one of them but my problem here is, I mixed up the 3 product key and I don't know which one of them is the right sticker for product key in one of my pc. Is there any way I can retrieve the product key of my computer so I can correctly put the sticker ?
This utility http://go.microsoft.com/fwlink/?linkid=52012 will reveal the last three of the five character groupings of your Product Key. That ought to be good enough to accomplish the task of matching installations to keys.