Hi, I'd like to know if I'll be able to upgrade my windows from home premuim to ultimate if I put the ultimate version DVD on my computer and then I select upgrade, is that possible? Thanks in advance.
You should be able to just use the Anytime Upgrade tool (find it in the start menu). Input your key and go. OEM SLP keys can be used
I just tried the anytime from home prem to Pro on a Compaq Laptop - using the OEM key from here for Pro worked great ! posting to help someone else on a search