Any DWG to PDF Converter is a batch converter that allows you to convert DWG to PDF, DXF to PDF without the need of AutoCAD.
Stand-alone utility - AutoCAD NOT required.
Convert DWG and DXF to vector PDF in batches.
Supports every version of DWG/DXF files (Supports R2.5/2.6, R9, R10, R12, R13, R14, R2000/2002, R2004/2005, ... formats)
Very easy to use.