Someone posted a message requesting the setting to manually enter for
Cingular. Here they are.

GPRS Settings:
Settings Name: Cingular Wireless Internet Express
Home Page: http://device:home or http://device.home
Session Mode: Permanent
Connection Security: On
APN: wap.cingular (lower case)
PDP_Type: IP
Gateway IP Address: 66.209.11.61
Port: 9201
Authentication Type: Secure
Login Type: Automatic
User Name: WAP@CINGULARGPRS.COM (All upper case)
Password: CINGULAR1 (All upper case)