I'm planning to upgrade my window vista home premium to window 7 utilmat. Is that possible? Or am i only able to upgrade window vista home premium to window 7 home premium.
Why not? Any version of XP or Vista qualifies for the upgrade license to Win 7 http://www.microsoft.com/windows/windows-7/
that said, you ought to do a clean install
this link may help http://arstechnica.com/microsoft/news/2 ... o-know.ars
here is a discussion; http://social.answers.microsoft.com/For ... 6b511cf205