So I have my RS-232 to usb cable plugged in and I've searched google for info on how to do this finding mostly dead links. What I've done so far is download Z-term and install the latest release of Mac OS X Prolific PL2303 driver project. All I came up with so far is the Mac sees it as this in System profiler:
USB 2.0 To COM Device:
Product ID: 0x2303
Vendor ID: 0x067b (Prolific Technology, Inc.)
Speed: Up to 12 Mb/sec
Manufacturer: Prolific Technology Inc.
Location ID: 0xfd110000 / 5
Current Available (mA): 100
Current Required (mA): 100
Anyone know how to setup Zterm to connect to it?