I'm trying to use a PC-version USR Sportster 28,800 Fax/Modem on a Mac 7200/75. I can't seem to get it to work above 9600 BPS. I've tried changing the default DIP switches by turning 1 off also, and I've tried several INIT strings, but to no avail. Is there a different INIT string or DIP switch combination I should be using, or do I need to use FreePPP (which I haven't been able to locate) instead of the ConfigPPP Control Panel I've been using? Or is using this PC modem with my Mac a lost cause?