An excerpt from Ghostscript's help:
"
Ghostscript PDF Printer Description
To assist with creating a PostScript file suitable for conversion to
PDF, ghostscript includes ghostpdf.ppd, a PostScript Printer Description
(PPD) file. This allows some distiller parameters to be set when a
PostScript file is generated.
Windows XP or 2000
To install a "Ghostscript PDF" printer on Windows XP, select the Windows
Control Panel, Printers and Faxes, Add a Printer, Local Printer, Use
port FILE: (Print to File), Have Disk..., select the directory containg
ghostpdf.ppd and ghostpdf.inf, select "Ghostscript PDF", Replace
existing driver (if asked), and answer the remaining questions
appropriately. After installing, open the "Ghostscript PDF" properties,
select the Device Settings tab, set "Mimimum Font Size to Download as
Outline" to 0 pixels.
To set distiller parameters, select the "Ghostscript PDF" Printing
Preferences, then the Advanced button. The PDF settings are under
"Printer Features".
"
That printer will print to a PS file, which could be converted to PDF
using ps2pdf.bat.