HOW TO: Install VMware Server On Ubuntu
This tutorial provides step-by-step instructions on how to install the free VMware Server (version 
1.0) on Ubuntu 6.06 LTS (Dapper Drake).
VMware has just released version 1.0 of its free VMware Server. With VMware Server you can create and run guest operating systems ("virtual machines") such as Linux, Windows, FreeBSD, etc. under a host operating system. This has the benefit that you can run multiple operating systems on the same hardware which saves a lot of money, and you can move virtual machines from one VMware Server to the next one (or to a system that has the VMware Player which is also free). In this article we use Ubuntu 6.06 LTS (Dapper Drake) as the host operating system.
I want to say first that this is not the only way of setting up such a system. There are many ways of achieving this goal but this is the way I take. I do not issue any guarantee that this will work for you! How To Install VMware Server On Ubuntu 6.06 LTS (Dapper Drake) | HowtoForge - Linux Howtos and Tutorials