How do I make a postscript file without a postscript printer?

  
Even though you don't have a postscript compatible printer you can still make a postscript compatible file.

Normally if you have a printer already attached to your system that is postscript compatible all you have to do is check the box that says "print to file" after you print a document to the printer.  This will make a file that you can then use on ps2pdf.com to make a Portable Document File.

If you don't already have a postscript compatible printer you can still install the postscript compatible printer driver on your system as if you owned a printer.  When asked for the "device" that the printer is attached to just select "file".  Now when you print it will create a postscript compatible file.