Originally Posted by carnageX
Would be a better idea to just copy off the files (basically the C:\Users\<username> directory), and then fresh install all required software and move the data back into the appropriate folders.
Should be able to re-activate Office on the new system as long as the old system is not used anymore (reformatted or at a minimum, Office is removed).
+1 - You could just copy everything in the user folder like Carnage was saying. One folder drag and drop that should capture all of the data, unless data is purposefully being store elsewhere. I always browse around the directories just in case, but...
Also, be sure to write down the product key or make sure you have the product key somewhere for Office before you send it. You'll need it for activation. Seems silly to say, I know, but so many folks don't think about it.