This is the news that I was waiting for... 
How many of you have tryed on the past to install a Linux distribution under
Virtual PC? I'm one of this and with the most part of Linux releases
the installation under Virtual PC was a disaster (I'm actually using Linux
virtual machines with VMWare).
Now seems that Microsoft (with the voice of
Steve Ballmer) has promised to add Linux support (for the first time in one of
its products) because users need to manage heterogeneous networks (wow, all this
time to understand this? 
). So, Virtual Server 2005, maybe
from the Service Pack 1 (today it was officially released the Beta
1 for testers), will support also Linux systems.