ok thanks ... what are the differences ?
An upgrade version requires that you have a previous version as well, a full version allows you to do a new install without needing an old install.
Alot of people have been screwed by this, They think "Oh im buying win7pro" Uhh no, Your buying an upgrade (a scam) to win7pro
The OP is selling Win7pro (Is it 64bit or 32bit?/both?) that you could clean install to a blank HDD an boot into windows
The box says is has both 32-bit and 64-bit discs inside. This is the full retail version which doesn't require owning any previous Windows version - you do a install straight to a new HD. The Upgrade version requires a previous activated Windows to be running from which the new install (or upgrade) will take place.
This is not actually true. An upgrade version disc contains the full version of Windows. You can do a clean install with it, without having a previous version of windows on your PC. As long as you perform ALL
the windows updates before you activate it (you have 3 days to activate after install), the code will work for the clean install.
Also just to advise op here is a link to a window 7 professional at $139.97, that's tigerdirect canada, so I am sure you can find it equivalent or cheaper in the states.http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=5213934&CatId=4622