Reconnect GPRS in Second edition FP1

Hi all,

I am connecting GPRS by selecting one of the access point which prompt when application starts sending data to the server.
Now my app may go out of the network area of GPRS connection, so my app will not work during this period. But when mobile agian comes in network area, i want to reconnect autometic with the access point, with which i was previously connect, whithout prompting the list of access points. I am not want to select aceess point manually.

Its important for me, plz send send any help regarding this setuation.
Thanks to all..
Mayur................