1) open your phone and dial
##634# then press call which will take you into the Diagnosis Menu.
2) In diagnosis mode (phone dialer) dial
*#7284# and you will receive three options, chooose “Modem, Tethered Call” and your phone will restart.
3) On your PC, go to the CONNECTIONS and change the settings for the "Samsung modem". If you set it to prompt for user name you’ll be able to put in the login info. This is all it is for AT&T:
number:
*99***1#
user name:
WAP@CINGULARGPRS.COM
password:
CINGULAR1
Press Connect and you’re tethered!