Thank you. I knew about MMC, but whenver I looked under Remote Administration, it only listed one option: "Remote Control of another machine (Linux/Unix, Windows)". so, I decided to take your advice and I clicked on it. Sure enough: it provides an option to allow control of the machine. I think I've got the server up and running, but I'm not sure. It displays this square-shaped window when I click "Launch (server)". the window has a logo with "RFB" and some sort of interface element to set the display number (it shows a "0").
I've been doing this in a VMware virtual machine on my Intel Mac, so I don't mess up the real system. Now, I know this is embarassing, but how do I find the ip address of the local machine on Linux? I want to try taking control of the virtual machine.