Frequent contributor Danny Korem discusses plotting an AutoCAD drawing to a PDF file instead of to paper.
"Sometimes you won't be able to plot directly to a plotting device from within AutoCAD. Instead, you can plot with the DWG to PDF device using the same parameters (paper size, scale, resolution, etc.). Whether your print jobs are normally sent to a local device or a distant one, it's OK; the results will be similar. In any case, you should consider plotting or printing using the media spec as defined in the DWG to PDF."
Notes from Cadalyst Tip Reviewer Brian Benton: This is the process by which AutoCAD files are turned into PDFs. They are printed to PDF just as if the PDF pc3 file was a printer. Once created, any PDF reader can view and print these files. They are also easy to transfer, and they make archival files of drawings.