EggXpert

I have OEM Office Professional installed on 2 different machines. One unit I will be doing the upgrade to Win 7. The second will be wiped and have a fresh windows 7 install. My first question: on the upgrade install of Win 7 will i have to reinstall office? Or the programs should remain? Secondly, is there potential for me to run into any problems with the PC receiving the fresh install and the re-installation of office? I know the OEM licenses are pretty sticky and I dont want to loose 'em.

When I was testing Windows 7 Office 2007 worked just fine as for the upgrade you will more then likely need to reinstall it. Just backup all the files that you have made like DOCX, XLS ect to a flash drive or CD. I did not have any issues with Windows 7 beta and Office 2007 at all.

If the PC you're upgrading is Vista AND is the same bit edition as the copy of Windows 7 you're upgrading to, then no, you shouldn't have to reinstall Office 2007..  That is the only time you wouldn't have to reinstall Office 2007. In every other case you have to nuke your entire operating system and if you're upgrading from Windows XP, you likely have to nuke the entire hard drive / partition (old NTFS) as well.

As far as losing your OEM licenses, as long as they're the same PCs, there's no problem.