Nokia Serial Data Cable Commands

[Lucky the code machine]

Hi, I want to write some code to link with my mobile phone. It is a Nokia 8210 and i have the serial data cable. I am fed up with the poor software suplyed and would like to send & receave text messages from & to my pc screen via the phone. Being able to up & down load logo's & ring tones would be a bonus. Does anyone have any pointers? - How do i do I/O with RS232 com1? - What does the phone require e.g. nokia commands? Thank you in advance. :) An Expert is somone who has previously made ALL the Mistakes, I dream of this day. - Lucky