hi thanks for reply
i didn't downloaded any GSM library for this. but in the "program files/Arduino/libraries/" i found GSM folder inside and there are no.of file there are notepad files with out any extension... what i have to do now???
->do i need to download the GSM library????
->from where can i download this library ???
i searched in arduino.cc for these libraries i did'nt find anything
if you know any links from where we can download please share with me ...