How can I improve the quality of bitmap images?

You can increase the default resolution to improve the quality of bitmap images.  To do this, open the printers folder, right click on the Win2PDF icon, and select "Document Defaults" (Windows NT) or "Printing Preferences" (Windows 2000/XP).  You can increase the default resolution under the "Advanced" tab to improve the bitmap quality but this will also increase the PDF file size.

For more information, see "Resolution".