Using nokia 6120 c to connect internet within ubuntu intrepid

I once used ubuntu hardy,and then i want to connect to internet with my nokia 6120 as the modem.I found out in the internet that i should use the lsusb etc,then edit the wvdial.conf.But when i try the intrepid,i do not have to use those.Just plug the nokia using the cable data,the intrepid will automaticaly detect,i just have to choose the operator and edit the apn,username and the password..Hope it helps to you guys...