How do I sent a SMS message through my phone?

I found an example code for the aurdino, SSerial2Mobile. I want to connect my phone Sony Ercisson Tm506 with the aurdino. But I don’t really know how to connect them. And When I compile the file, it gave me an error “SSerial2Mobile was not declared in this scope”. please help

/*
Example of SSerial2Mobile libary

Sends a SMS and an email
The SMS phone number and the email address need to be changed to something valid.

created Jan 2010
by Gustav von Roth
*/

#include <NewSoftSerial.h>
#include <SSerial2Mobile.h>

#define RXpin 10
#define TXpin 11 //blue

int returnVal=10;

void setup() {
Serial.begin(9600);
SSerial2Mobile phone = SSerial2Mobile(RXpin,TXpin);

//returnVal=phone.isOK();
//Serial.println(returnVal, DEC);
//delay(3000);

Serial.print(“Batt: “);
Serial.print(phone.batt());
Serial.println(”%”);

Serial.print("RSSI: ");
Serial.println(phone.rssi());
// Any RSSI over >=5 should be fine for SMS
// SMS: 5
// voice: 10
// data: 20

phone.sendTxt("+12125550125",“Lib SMS Test1”);
delay(3000);
phone.sendEmail(“SSerial2Moble@example.com”, “Lib email test1”);
delay(3000);

}
void loop(){}

And When I compile the file, it gave me an error "SSerial2Mobile was not declared in this scope".

Is that the only error it gives, or simply the last error?