Non-Classmate Driver Station

Looking for suggestions on a small PC for a drivers station.

What are you using?
What version of Win 7?
32 or 64 bit?
Number of USB?

Can you get by on one USB port?

We have an HP Pavilion dm1 notebook

Win 7 Home Premium, 64-bit
AMD E-350 processor, 2 cores, 1.6GHz
3 GB memory
200GB disk
(3) USB ports - more is better

One USB port limits the power you can draw from the PC.
You can run 3 of the Kit joysticks, not the Cypress though. Fancier joysticks can become a power problem.