Has anyone ever successfully printed to an HP PSC 750 that was plugged via USB into an AirPort Express? The HP PSC 750 barely works when directly plugged in via USB... it has a year-old driver, and requires that it be set up via the "HP AiO" option, instead of "USB" in the Printer Setup Utility. I had it working via printer sharing, where it was plugged into my old iMac G3, but it was butt-slow. And I don't want to keep the iMac just to print. Unfortunately, according to the HP support site, this model has not been "successfully" tested with AirPort. I can print via IP printing, but it prints the PostScript headers. ie, it's a bunch of gibberish. Has anyone figured out a way to print to it through an APE?