What's a good utility to convert gerbers to DXF/DWG?

The reason I ask: I'd like to create gerbers to give to mechanical engineers for use in SolidWorks to look for interference due to solder fillets on pads and other interferences. I'm using PADS Layout and it has a DXF export but the output is messy and the export utility offers few options to control the DXF output.

A gerber to DXF conversion utility could provide enough flexibility and control what goes into the DXF.

I'd welcome insights or suggestions to close the EE / ME gap - methods to get realistic models of PCBs into 3D cad.

Meanwhile, I'll try a free trial of ViewMate Pro.