Use of RS-232 serial connector

Hi,
I have a very basic question that what is the functionality of Rs-232 serial cable. I am still not been able to use that cable?
Also I am looking towards interfacing a USB/Leopard board camera module so can anyone help me out?

Thanks.

Could you make your question a little more specific?

Can you let us know which board you have?

Each version uses the serial port in different ways. One is over uSB, two are over RS232. And the boards that have RS232 use different cables.

Another thing you can do is go to here http://circuitco.com/support/index.php?title=Main_Page
Selct the board you have.
Then look for the System Reference Manual and read the section on the Serial ports for the board you have.

Gerald