Convert RTF file to PDF

I have code that creates a set of rtf files. I would like to write something to automatically convert these files to pdf.

Distiller will convert Postscript files to pdf but how do I convert rtf to pdf? I am using VB to generate the rtf files, but do I need to write more vb code to do this?

I create PDFs by sending the information to a PDF printer. There are a bunch of free ones around. The easiest way is to have Word open the RTF, then send it to the PDF printer like you would a normal printer.