HP ProLiant server sizer for Microsoft Virtual Serer 2005 R2

So I got sent a pretty cool link today:


(You will need to signup for a HP login to view this page)

What it does is ask you a whole bunch of questions about what type, configuration and number of virtual machines that you want to run on top of Virtual Server R2 and then gives a recommendation as to what sort of HP hardware you should buy to get up and running.