Last year I was forced to create a hack with AppleScript Folder Actions and the Desktop Printer Utility in order to print from Classic using the OS X printer drivers. Now, I'm glad to say, Tiger has made my hack obsolete. Quietly, Apple changed Classic so that it automatically recognizes the OS X print queues. This simple little change is a huge boon for me in managing hundreds of OS X machines at the K-12 where I work, because it means I can eliminate AppleTalk, the Chooser, and the confusion that comes from multiple dissimilar printing methods.
To see this change in action, open SimpleText and choose File -> Print. The pull-down menu at the top of the print dialog box will be populated with your Classic printers as well as your OS X printers. Choosing an OS X printer will pass the job off to OS X, which will treat it like any other print job.
If you have a lot of old and unused printers in the pull-down menu, the simplest way to remove all but the currently configured OS X printers is to stop Classic, delete either /System Folder -> Preferences -> Printing Prefs or ~/Library -> Classic -> Preferences -> Printing Prefs (depending on whether or not you've selected "Use Mac OS 9 preferences from your home folder" in the Advanced tab of the Classic Prefs Pane), and then restart Classic. Classic will then automatically rebuild the list from your OS X setup.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20050726213620941