No Sound = Not Good For Musicians:(, Help on audio sound Options

[Quixa]

I have a tascam US-122 as my audio midi interface and the software im using is Logic express 6. I loaded my tascam drivers before installing logic like it says to do. I also know that the tascam works because i can get sound out through the line out and the headphones socket. The only thing i cant seem to get is any sort of signal sent through the USB to the computer. There just seems to be nothing coming tthrough the other side.
I know the drivers for the tascam have been installed correctly because they show up in the inputs and outputs when i go to sound options.
I have been told to drop the ASIO drivers into an empty asio drivers folder in the logic 6 series folder that should have been made when i installed logic. this didnt exist so i created one myself just incase it was a mistake by te computer. This was to no avail Please can anyone help me. I am pretty sure its just one stupid little setting that is standing in my way somewhere.

Running on Mac OS X 3.5 PowerPC G5

Im very new to this world and so may need some help in understanding everything that you guys say. Also if you dont understand what i am saying please ask and ill find out how to say it better.

Thanks for reading this.
quixa