Hi friends.. Which editions of Windows 7 can be activated through Volume Licensing, e.g. with a MAK key? Is it only the Pro. and Ent. version or also the Ultimate version? I'm aware of the fact, that windows 7 is distributed as a Retail, OEM or Volume installation.. But which editions can be activatet with which keys? For example I know that you can install the Retail version an then activate it with an OEM key... Can anyone clear this out?