adxl 335 problem

Greetings guys,
I'm new to arduino. Recently i bought an adxl 335, like this: " Screenshot by Lightshot ", and i followed tutorials, but i think something was totally wrong. When i pressed "serial monitor" to see the results there was no change in them even if the sensor was in movement or stable. Is it damaged or i do something wrong?

Connections:
vcc->3.3v
x->A0
y->A1
Z->A2
gnd->gnd

Here is the latest code i used:

const int xpin = A0; // x-axis of the accelerometer
const int ypin = A1; // y-axis
const int zpin = A2; // z-axis (only on 3-axis models)
void setup()
{
// initialize the serial communications:
Serial.begin(9600);
}
void loop()
{
int x = analogRead(xpin); //read from xpin
delay(1);
int y = analogRead(ypin); //read from ypin
delay(1);
int z = analogRead(zpin); //read from zpin

Serial.print(x); //print x value on serial monitor
Serial.print("\t");
Serial.print(y); //print y value on serial monitor
Serial.print("\t");
Serial.print(z); //print z value on serial monitor
Serial.print("\n");
delay(500);
}

Tnx for help in advance