romraider will not help you. It does not read or flash roms from the ECU. You need ECUFLASH. Your one stop shop for reading, editing and flashing roms. http://www.openecu.org/index.php?title=EcuFlash If you have good reading comprehension you'll see that its compatible for MACs.
^^ listen to this guy. I forgot that RomRaider doesn't write, it's basically just a reader/logging tool. Download the OpenECU via Will's post above and put it on your Mac. That will take care of your issues.
yep just saw that, like i stated above im retarded, i neew one of those usb to obdII conecters right.
^^word really, well i have about 3 days to get my car inspected before i get slapped with a fine. what im shooting for with this is to eliminate my codes, my question is can i just go buy a o2 senor tomorrow, install, log miles and then pass inspections, or do i need to replace and put in a cel mechanical fix with it.