this is the code i use to send a sms, never used a cdma-device though.
Code:
MessageConnection _dc = (MessageConnection)Connector.open("sms://"+number);
Message sms = _dc.newMessage(MessageConnection.TEXT_MESSAGE);
TextMessage sms2 = (TextMessage)sms;
sms2.setPayloadText(msg);
_dc.send(sms2);