Hey Richard,
You can use SolidWorks and create drawings from the field assembly file, which you can download from the link posted previously:
http://www.solidworks.com/sw/educati...gn-contest.htm
Once you do this, you can save it as a 2D CAD file in the specified format ( *.dwg, *.dxf). You just have to adjust the scaling but it should work!
-Colleen