Sounds nice, but I see a problem - you lose any printer-specific settings in the Print dialog. You could choose a specific PPD for a printer when setting up the translator, but that would work for a single model of printer. You would have to make separate printer folders and change the script to automatically send to a particular printer.

We have a mix of laser printers and large and small format inkjets, and settings must be made for a specific printer or prints and plots have problems, especially from finicky applications such as QuarkXPress.

But a nice idea that I might play with when I get more of our office converted to Mac OS X.

Though I haven't tried it, I'm pretty sure that you could get the results you're looking for by creating multiple instances of the desktop printer (step 6). Try creating each one w/ the PPD that you desire, and have each one default to a different folder. Then, if you copy the AppleScript and tweak it so that each copy sends the job to a specific printer, and attach the appropriate script as a folder action to each of the default folders, you should be good to go.

If you do this, then when you print from Classic, you can select multiple printers from the pull-down menu, and each one will default to a different folder, to be handled by a slightly different folder action.