Thanks for the info, it is great. It verifies something I read for the Arduino Mini/Mini Pros I have see - the tiny ones without a USP Port on them. But for the Arduino Nano/Nano Pro, the tiny ones with a usb port on them, the majority of them use that CH341 USB to Serial port chip. Thus I fixed the problem for a Wintel PC, I can not for the OSX Mac.

And this is only for the cheap chinese clones - not the Original Arduinos and some clones like SainSmart, which work on the Mac OSX once you figure out the connection on the control panel. Under 10.4, it would be listed under USB Modem in the Network Control Panel, you need to do nothing to it. You just need to tell the Arduino IDE which port the Arduino is connected too, which is the USB Modem. It works great from there.