Well, you know, Virtual Server isn’t yet released, but Microsoft community is already very active around it. I cannot disclose much about it since NDA beta program agreement obliges me to.
What is important here to say is that Virtual Server will require some OS components to let you administer virtual machines. This could be something problematic for some of us, or simply unwanted.
Is the case of an actual Virtual Server beta tester, Andrey Slanin, who created and publicily distributed a great Excel tool to replace official Microsoft VMs management. You can grab it here.
At today I dunno if it also works with Virtual PC 2004. Andrey will inform me when tried or eventually adapted. Meanwhile you could just try from yourself 🙂
P.s.: all authorizations to Microsoft and Andrey are obtained, before writing this post.