said by The WeaseL:Most likely some of your hardware is not going to work with VMWare.
If you are trying ESXi v4.0, try v3.5. If v3.5 doesn't work, I would suggest then installing Linux and dropping VMWare Server onto that. Or if you can get your hands on Windows 2008 you can use Microsoft's Hyper-V and their virtualization abilities.
And like mentioned above, you will want more then 2 gigs of ram if you want to run more then 3-4 VM's without tons of HD thrashing within ESX.
Hyper-V requires Intel or AMD Virtualization support. I'm not sure if his 4200+ supports it, so he'll need to verify that.
