I heard someone say that they can import a SW file into mastercam and export it as DXF.
Dont realy know if it works or not.......I will tomorrow though and Ill let you guys know. If it does Id be glad to convert it for ya's
EDIT
Didnt work but I found a site that tels you how to make a DXF file from a solidworks model..........
LINKAGE
http://psdam.mit.edu/2.000/tutorials...F-Tutorial.pdf
Hope this helps