Wait a minute, I thought I was the R & D guy for Holm Made Traditional Bows?
Basically any old CAD package that exports a .DXF file will do. The trick is getting a good CAD guy to smooth out the transitions between the radii, the rest is easy.
However this is done, you need to at least have the guy plot out something full scale before you start making aluminum chips, and hold it up against the old form, even half or a quarter of the form would do.
Chad or Shawn let me know if I can help. Chad that .DXF I sent you some time ago would be a good one to test to see if the guy can read it into his software. The more sophisticated CAM packages could work with solids files like .SAT or .STP, there is a solids version of .DXF too.
-Mike