How connect Arduino to Mobile Phone Ericsson T230

Hello,
i read this post: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1227581530
so i buy a Sony T230, i make the connection like the post, but it doesn' t work.

What can i do ?

Anyone work this project ?

Can i made a serial interface with MAX232 ?

Can you help me with the schema ?

I want to make a controller for my aquarium and i want that the arduino send the alarm troght SMS .

Can you help me ?

THANKS A LOT :smiley:

Luca