Do you mean you want to remotely administer a W2KAS box from a W2KPro box?
First off, many of the MMC snap-ins can be run against a remote computer. Install adminpak.msi to get all the snap-ins on your W2KPro box, and you can pretty much administer the remote computer that way.
If you're talking about having a remote control session, what you want is Terminal Services. Go to Add/Remove programs on the server, go to Add/Remove windows components, and add Terminal Services. Choose remote administration mode.
Then, on the server machine, go to the start menu and find the utility that creates Terminal Services client diskettes. Create the diskettes, take 'em to the Pro box, and install the Terminal Services client on the Pro box.
Launch terminal services client and connect to the server machine.
