One thing that's sometimes useful in edge cases, like if you already have a Linux/UNIX print server that can do Postscript translation and exposes the traditional "LPR" print server port (or a networked postscript printer that has LPR support built in, a lot of older print servers can do it, but doesn't do Appletalk) is the "Desktop printer queue" support that was included with later versions of the Apple Laserwriter driver. Here's some instructions on how to use it:

http://www.rit.edu/its/services/desktop_support/mac/clprprintersetup.html

The main limitation is that it only works with Mac OS versions 7.5 and up. It can save you the hassle of getting Netatalk to work, and there are also recipes out there for setting up LPR/LPD shares with postscript translation on Windows boxes. (I've done it myself.. a long, long time ago. Windows 95-ago.)

(Also note, of course, that OS X can print to LPR/LPD ports. In that case you don't necessarily have to set up postscript translation, you just need to use the right GIMPprint driver.)