File list (Check if you may need any files):
GSMSHIELD
.........\call.cpp
.........\call.h
.........\doc
.........\...\Istructions.txt
.........\...\List.txt
.........\examples
.........\........\GSM_GPRSLibrary_AT
.........\........\..................\GSM_GPRSLibrary_AT.ino
.........\........\GSM_GPRSLibrary_Call
.........\........\....................\GSM_GPRSLibrary_Call.ino
.........\........\GSM_GPRSLibrary_Client
.........\........\......................\GSM_GPRSLibrary_Client.ino
.........\........\GSM_GPRSLibrary_DTMF
.........\........\....................\GSM_GPRSLibrary_DTMF.ino
.........\........\GSM_GPRSLibrary_GPS
.........\........\...................\GSM_GPRSLibrary_GPS.ino
.........\........\GSM_GPRSLibrary_Server
.........\........\......................\GSM_GPRSLibrary_Server.ino
.........\........\GSM_GPRSLibrary_SMS
.........\........\...................\GSM_GPRSLibrary_SMS.ino
.........\gps.cpp
.........\gps.h
.........\GSM.cpp
.........\GSM.h
.........\HWSerial.cpp
.........\HWSerial.h
.........\inetGSM.cpp
.........\inetGSM.h
.........\LOG.cpp
.........\LOG.h
.........\README
.........\SIM900.cpp
.........\SIM900.h
.........\sms.cpp
.........\sms.h
.........\Streaming.h
.........\WideTextFinder.cpp
.........\WideTextFinder.h