Not only is it a chat on its own but you can also connect to MSN ICQ and YAHOO messeging services

http://www.mmsstorage.com/mobile_content.php
or http://wap.mmsstorage.com/demos
Here are the settings incase you dont have them

Internet GPRS settings - SWISSCOM
Connection name: Swisscom GPRS
Data bearer: GPRS
Access point name: gprs.swisscom.ch
User name: none
Prompt password: no
Password: none
Authentication: secure
Gateway IP: 192.168.210.1
Homepage: http://www.gomobile.ch/e.wml
Connection security: off
Session mode: permanent

Internet GPRS settings - SUNRISE
Connection name: Sunrise GPRS
Data bearer: GPRS
Access point name: internet
User name: (leave empty)
Prompt password: no
Password: (leave empty)
Authentication: secure
Gateway IP: 212.35.34.70
Homepage: http://www.sunrise.ch
Connection security: off
Session mode: permanent