I used the following settings
Start, 8 Settings, 9 More..., 2 Data Connections, Menu, 1 Edit Connections, 4 GPRS Connections, Menu, 1 Add
Description: Virgin GPRS (This can be any name)
Connects to: The Internet
Access point: goto.virginmobile.uk
User name: user
Password:
Primary DNS: 193.30.166.3
Secondary DNS:
IP Address:
Start, 8 Settings, 9 More..., 2 Data Connections
Internet connection: Virgin GPRS (This must be the same name that was specified above)