sony ericsson W810i connection problem with macbook

I have a Sony Ericsson W810i, and I want to transfer some photo's from the phone to my macbook. I can get the bluetooth to link with the phone for tranfer, but I'm having problems when I try to use the USB cable. When I connect the USB cable, the phone recognizes the connection, and warns not to disconnect from the cable untill...etc. however, I never get an Icon on the computer recognizing the phone. in short, The mac never sees the phone. any ideas???