I looked ALL over, and for some odd reason, this particular model of Brother Laser Printers was abandoned after OS X 10.3 Hl-1230 has updated drivers for Windows XP, and I believe even VISTA, but nowhere could I locate anything for OS X 10.4. Brother's support did nothing either. I connected it to the mac via USB (i had to buy the serial to USB cable). I added the printer like normal, and picked the 'brother HL 1240 driver. It seemed to be the closest match, so I tried and it worked! I have screen shot below. I did a test print on a text file, even a photo and it printed perfectly. No hanging on anything, no unending blank pages. If anyone else has a Brother HL-1230, try that setup, and see if it works. and I know at least 1 of you Do, or did, as I've seen an unresolved thread here before about that printer and 10.4. Sincerely, a very proud me.