Re: office xp and office small biz 07
Microsoft introduced "Product Activation" with Office XP (2002), so you may be unable to activate it in a second computer. If so, after 30 days it will either stop working or have much reduced functionality.
Having said that, some versions of Office do allow its installation in a Desktop PC and a Laptop (i.e. two PCs), in which case you might manage to use it in a new PC. Check with any paperwork or the box that came with the disks.
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