Citrix has just provided an evaluation version of their Presentation Server available as a virtual machine through our VHD Testdrive program.  This is a fairly hefty download - but you can be up and running within minutes of finishing the download.

All in all a very nice way to check out new server software, without having to spend hours and hours configuring things first.

You can find out more here: http://www.citrix.com/English/ps2/products/feature.asp?contentID=658703

Cheers,
Ben