Upgrade

[drz01]

I have Home premium and want to upgrade to ultimate can I just change my key and do the upgrade this way? I have the ultimate disk and key. I do not want to have to reinstall.

 

[LeeJend]

Is the Ultimate key a full Ultimate or did you buy an Upgrade or OEM version of Ultimate? It could get messy going from retail to OEM or trying to use an upgrade disk on an OEM version. The liscences are significantly different on what is allowed.

Hint - call MS and ask. If they say yes have them help you do it and activate while on the phone, just in case.

Already have Windows Vista but want a more capable version? Here's good news. When you're ready for more of what Windows Vista has to offer, Windows Anytime Upgrade is a convenient and affordable way to upgrade to the Premium or Ultimate edition. And you can do it online from the comfort of your home or office.
Depending on the edition you currently have, here are your upgrade options:

http://www.microsoft.com/windows/pr...orupgrade/windowsanytimeupgrade/overview.mspx

It is a peice of cake to do using their upgrade advisor BUT since they say it takes an hour it sounds like it is more involved than just a key change.