To You Forum People, I purchased the Windows 7 Home Professional Upgrade from digitalriver. I am getting a backup DVD in the mail in short order, I believe this 'backup DVD' is the same package that one gets when purchasing the upgrade disc at a store. Anyway, on to my question. I have installed Windows 7 -- upgrading (ie not clean) from Windows Vista -- via the electronic download. I then activated Windows 7. However, now I want to do a clean install as there are some issues rising through the cracks after performing the upgrade. I can not reinstall Vista and do the 'double install' trick or custom install as my Vista was OEM and I was never given the disc. Is there a way to reinstall with a clean install with my Windows 7 Upgrade disc?