Just a heads-up: virtualpc doesn’t ship with virtual machine additions for linux, so you need to join their beta testing program at:
(which gives you access to a lot of cool beta software that they are working on (Including the new “Powershell”)).
Once you are “connected”, you can then participate in any of the programs that are listed at Available Connections. For this blog entry, we are interested in participating in the Microsoft Virtual Machine Additions for Linux program… I will let you know if I can install them on Ubuntu, which is unsupported
Here is more information about supported GNU/Linux distributions:
Third-party guest operating systems that are supported for use with Virtual Server 2005 R2