I use Virtual PC and Remote Desktop Connection (RDC) a lot in my daily acitivities.
Recently I found that there is very nice tool built-in Windows that allows you to manage miltiple RDC.
You can start this MMC console by typing in Run command window (Win+R) tsmmc.msc.

for more detailed way to display RDC MMC Snap-in see MS TechNet's Add the Remote Desktops snap-in article.
So far so good. But I am running Windows Vista on my laptop so I need to use on it.
But guess what?! I tried it in similar way as described in Add the Remote Desktops snap-in but I was not able to add this snap-in. There is no such file as tsmmc.msc.I found this thread in TechNet forums saying there are bunch of dlls in vista that need to be registered using regsvr32 in order to be used. Unfortunately even after registering these dlls I was not able to access RDC MMC snap-in.
So I decided to try in hard way :)
After some DLL research I copied mstsmmc.dll from Windows 2003 machine to my vista box and registered using following command:
regsvr32 mstsmmc.dll
and Bingo. That's it. There is Remote Desktops snapp-in in the list

and of course you are able to start tsmmc.msc (also copied from Win 2003 machine)

You can download these files from the link below. Enjoy
RDC_MMC_Snap-in_Vista.zip (75.47 KB)