Ubuntu’s server distribution, with its tiny memory footprint, makes a really decent base setup for a VMware server machine. Using X11, you can even run the console on the server and have it remotely displayed to a Mac desktop (since there isn’t a native Mac console available).
Here’s a decent walkthrough that will quickly take you start to finish through installing the required software on a fresh Ubuntu box, configuring VMware, and administering it from your Mac. Have fun!
The Perfect VMWare server setup (Multi User and Multi Environment…FAST) –Link.