Hi MME1122,

First off, some clarification:
When you buy a retail copy of MS Office, you get only 1 license. That license entitles you to install the software on whatever hardware the End-User Licence Agreement (EULA) specifies. That entitlement varies by edition and purchase type. See 'Pricing and licensing' at http://office.microsoft.com/en-us/pr...101674631.aspx for an outline. For the full details, download the set from: http://www.microsoft.com/download/en...17777&id=13653.
The Academic editions are different, in that they are multi-license (volume license) products. See: http://www.microsoft.com/education/e.../eligible.aspx

You also say you've upgraded to Office 2010 Professional Academic. I don't think that's possible. Whilst you can buy an Academic license cheaply, I don't believe it's an upgrade as such. If it were, you would no longer be entitled to use whatever edition (eg Home 7 Student) or version (eg Office 2007) you upgraded from.

As for transferring the license to a new system, that's entirely in order. You should uninstall it from the old one first, though. If you end up nominally exceeding the number of platforms on which MS thinks you're entitled to, the most you'll need to do is to give them a call. There are various links from the last mentioned site above that might be worth checking out, as it's not at all clear from what you've posted which Academic licensing arrangement applies in your case.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]