With Virtual Server 2005 we added the ability to cluster two virtual machines over a shared SCSI bus.  If you are like me - your response to this is 'Cool - I can setup a cluster and play around with it all on one computer...  Shame I don't know how to setup a clustered server...  Hmm...'

:-)

Well - we now have a complete 'step-by-step' idiots guide to setting up a Windows 2003 cluster under Virtual Server - and it is available here: http://www.microsoft.com/technet/prodtechnol/virtualserver/deploy/cvs2005.mspx

Cheers,
Ben