Please, please, please back up software that you purchase as downloads!
I understand your dilemma; it's nearly impossible to log in and have the company allow you to download it again 3+ years after purchasing the downloadable version on a promotional website. I hope this experience emphasizes the importance of creating discs
and storing files elsewhere.
That being said:
http://msft-dnl.digitalrivercontent.net/msoffice/pub/X12-30307/X12-30307.exe
Please make note that you must have purchased the software along with your own serial to use this file. It is the download from Digital River for Microsoft Office Ultimate 2007. You WILL need your own serial that you acquired at purchase.
I hope this resolves your issue. I would suggest that you copy it to a CD-R, label it, and treat it as your physical software for the program before simply downloading it and putting it off. :D
Have fun, be smart, and take care!
Roxanne