Blockhead needing help with CNC nest

What this needs to be is a CNC machined nest for the stampedpart.If anyone can give me some basic pointers on what to do with asituation like this, It would be greatly appreciated. We designmachines with basic "blocky" parts.
Surfacing or molds or cavities etc...I'm clueless about.
The need for something like this in our company is very seldom, butsome more similar things may come along. Here are the SW2009 filesin zip. Please correspond via e-mail regarding thissubject...jim.moder@earthlink.net
Thank you very much.
SolidworksSurfacing