This article is from the Miscellaneous Macintosh FAQ, by Elliotte Rusty Harold email@example.com with numerous contributions by others.
If your printer isn't a PostScript printer with an AppleTalk
interface, you need PowerPrint from GDT Softworks. It includes
the necessary printer drivers and serial to parallel cable to
connect a Macintosh with any common PC printer including HP
LaserJets and DeskJets. If your printer is uncommon you can
always ask the vendor before ordering. Street price is