I started playing with the VHD files Microsoft provides. The exchange VHD had its own domain controller. I ran it on the Beta Virtual Server 2005 R2 SP1 and it seemed okay. I didn’t try it on Virtual PC 2007, but I was told it wouldn’t work by on the group at OWSUG’s study group. You’ll want Virtual Server for the ISA image as you will want a couple of virtual networks to test this out. The other thing they don’t tell you is you can extend the functionality of the VHD’s until March 2008 if you have Technet or MSDN. Simply put in the key from your subscription and the 30 day limit disappears. Again the same rules apply as though it was a technet trial.
I also started playing with the free elearning courses at Microsoft E-Learning site. These will be handy on the train tomorrow as I am in Toronto for work. So far I am about half way through the Vista and Office Business Deployment course. I want to try and get through these prior to the launch event.