My MBP running Leopard, used to print fine wireless. I'm no longer using my airport extreme express and share a wireless connection with my neighbor, who has a PC. I have a Brother laser HL-2140 printer that I am trying to install by USB. I have downloaded all new required drivers, followed the steps exactly and for some reason my MBP will not recognize this or any other USB printer. I've changed USB cables, and USB ports. The only printer that it detects is Adobe pdf 9.0. I am SO FRUSTRATED, does anyone know what I am doing wrong?? I would appreciate ANY help..please!