Thanks knut, i have tried the nokia 6610 with hyperterminal, and nokia 6610 use at command with text . (AT+CMGF=1 respon OK).
and i have tried to send sms from hyperterminal.
i use CA-42 cable for communicate between hyperterminal and nokia 6610.
i still dont understand how to connect and interface the nokia 6610 to the arduino.. 
anyone can help me please.. this is my last project for diploma 
thanks,
best regards
asmoro