I2C LCD

i bougt a starter kit arduino ,and i am made all the steps…but i can not make the lcd with the i2c lcd1602 module it gives me an anser like"Arduino: 1.5.8 (Windows 7), Placa:“Arduino Uno”

LCD1602.ino:3:31: fatal error: LiquidCrystal_I2C.h: No such file or directory
compilation terminated.
Erro ao compilar."

this is the code i use"/ include the library code
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
//
char array1[]=" SUNFOUNDER "; //the string to print on the LCD
char array2[]="hello, world! "; //the string to print on the LCD
int tim = 250; //the value of delay time
// initialize the library with the numbers of the interface pins
LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display
/
/
void setup()
{
lcd.init(); //initialize the lcd
lcd.backlight(); //open the backlight
}
/
********************************************************/
void loop()
{
lcd.setCursor(15,0); // set the cursor to column 15, line 0
for (int positionCounter1 = 0; positionCounter1 < 26; positionCounter1++)
{
lcd.scrollDisplayLeft(); //Scrolls the contents of the display one space to the left.
lcd.print(array1[positionCounter1]); // Print a message to the LCD.
delay(tim); //wait for 250 microseconds
}
lcd.clear(); //Clears the LCD screen and positions the cursor in the upper-left corner.
lcd.setCursor(15,1); // set the cursor to column 15, line 1
for (int positionCounter = 0; positionCounter < 26; positionCounter++)
{
lcd.scrollDisplayLeft(); //Scrolls the contents of the display one space to the left.
lcd.print(array2[positionCounter]); // Print a message to the LCD.
delay(tim); //wait for 250 microseconds
}
lcd.clear(); //Clears the LCD screen and positions the cursor in the upper-left corner."

is the code that came with the starter kit.
can anyone helpe me with this?

LCD1602.ino:3:31: fatal error: LiquidCrystal_I2C.h: No such file or directory

It looks like you have not installed your library properly. Try following the instructions that you find here: --> http://arduino.cc/en/Guide/Libraries

Don

you,are rigth,thanks very much