Mac Serial Port ID

Hello, I am new to Arduino, but I recieived a osepp nano recently and would like to start using it. I downloaded the software for macs and downloaded it, put it into the application folder and ran it.It seems to work fine but when I go under tools/ serial ports and and it lists the same two whether I have anything plugged into my USB ports or not. I have tried opening the program with the nano plugged it and a bunch other ways and nothing seems to work. When I open the about this mac section under the apple on the toolbar it lists it as a USB Bus calling it FT23R USB UART co the computer knows its there but how can I make the arduino software find it?

I looked through the trouble shooting guide and they make it seem that it should just pick it up but it is not. Hopefully someone here can help me with this problem as I would love to get started building stuff. Thanks for all the help and the cool open source platform that is arduino.

You need to install the latest Virtual Communication Port drivers from FTDI:

http://www.ftdichip.com/Drivers/VCP.htm

Note: V2.2.16 works fine with Mac OS X 10.7 (Lion) even though the installation package is named: FTDIUSBSerialDriver_10_4_10_5_10_6.mpkg

XD XD XD This worked GREAT!!! Thank you VERY much I finally got that sneaky little bastard to blink. I did have to call FTDI Chip because there was a space needed in the code you put in your terminal, instead of "ls-l" you need to put "ls -l". The people at FTDI were great no wait time to talk to tech and quick answer that solved my problem. This is probably a standard fix but it has been a while since I have done any programming. Anyways thanks for the help XD XD XD