I concur that using Ubuntu for the screenshots, however I find it very curios that 87% of downloads are Windows Server users (or does 2012 encapsulate Win8 also?). To put everyone at ease I looked up the legalese from Microsoft, and according to them, we can use their screenshots as long as we conform to their rules. The sticky one is number 4, and it is not well defined...back to Ubuntu?
http://www.microsoft.com/About/Legal/EN/US/IntellectualProperty/Permissions/Default.aspx#ERG Cheers, Mike Hi all; > > If there is lack of consensus on whether there is legal risk or not then > the best way to go is to use a Linux variant. We can put a Note in the > Introduction that the appearance of some elements will differ from what > they see in the documentation. > > Regards > Keith