If by upgrade you mean, is it upgrade only, then yeah, it is upgrade only which is why I have to install my old operating system before I re-upgrade. If by retail you mean did I get it from walmart, then its retail.
Oops I made a mistake in my original post. I still have my windows 7 install but it is not yet reformatted, so from it I would like to retrieve the key I used to upgrade it. I know which windows 7 key I used, but not the one from before that.