Solved: See Comments.

See my post on Experts-Exchange.

I need to be able to run x64 Server operating systems in a virutal machine on my desktop comptuer. Can anyone out there help?

Here are the specs of my PC:
Dell Optiplex 755
Intel E8500 Processor (3.16GHz, 6M, VT, 1333MHz FSB)
8GB [...]