Registering phone devices

Dear all,

I am an asterisk newbie and I desperately need some guidance. I am working with asterisknow 1.5 (upgraded to asterisk 1.6) but I am to the point in which I am unable to assign an extension to a phone device. I have two tiger jet cards (one fxo, one fxs) inserted into my computer. I have checked to see the status of cards, and the prompt tells me that I have 8 unconfigured channels (so I am assuming that my cards are working). What steps do I need to do to configure my channels and further steps to assign a set extension of freepbx to a device? I have researched and acquired much documentation, but none has helped me to find a solution. I am on the verge of aborting this project. Thanks for any help in advance.