Glancing around the surplus market yielded the following computer which seems like it would be entirely capable of driving my as yet unstarted robotics project.
Dell Optiplex GX1 PIII 450Mhz./ 128MB/ 6GB/ CD(Desktop)
I found out that tigersurplus has the same sort of systems for less money, but it’s about the same when you add in shipping. I think I’ll travel down south and have a gander at one of these this weekend.