Hello my dear friends

I have Nokia 3120.
I plan to send a bulk SMS through PC which supported with my mobile nokia 3120.I have USB port interface cable to my mobile.I try with google to sending bulk SMS softwares.Most of them which supports only COM port.There Is any software which supports for USB interface with PC.What is the best software to send the BULK SMS in nokia 3120.
Expecting everyone help.

with regards