Good luck.
The old ones don't have the language or connectors for modern computers.....
I am just in the process of acquiring one for a ArchiCAD-image-to-pencil-on-watercolor-paper project.
If price is no object, you should look at pattern cutters that have all kinds of add-ons.
For instance, when I am in Australia next month, I'm going to see these guys:
http://www.Aeronaut.org
about their IKON product.
But why do you need it to be a FLATBED? How thick and heavy is your paper? I will be working on heavy paper and card - I have two scroll-type plotters that work fine on lighter paper.
Dwight Atkinson