Connect the printer to the Mac. Restart the mac. This seems stupid to me, but it really is the only way to get the Mac to reckognize the printer, even though it's a USB printer.
Install the Samsung-GDI-Foomatic driver. Did you know that Lexmark printer you've connected to your Mac is really a repackaged Samsung printer?
Install the ESPGS interpreter on the same page. ESPGS will act as some sort of postscript interpreter/filter thing. Even though the E210 is a postscript printer, there is no interpreter in the printer, so you have to install one.
Install the Gimp-Print Printer Drivers. Mac OS X doesn't come with support for the Lexmark E210. The printer isn't supported by Apple, or Lexmark. Gimp-print will manage it.
Open "System Preferences", and click on the Print & Fax icon. Click on the Set Up Printers... button. If you don't have another printer installed, the application will prompt you to install a printer. Hold down option when you click add. Really. Just do it, don't bother asking why: you'll get a headache if you try to think about what's going on. If you already had a printer installed, hold down option and click the Add icon. If all has gone well, you should be able to select "E210" from the device drop down menu. Select Lexmark from the Printer Model drop down, and then scroll down to "Lexmark E210, Foomatic+gdi".
Done. Really, you should be able to print.
posted here because I don't want to have to waste another saturday with google.