Arduino code help.

const int ledPin =  13;      // the number of the LED pin

// Variables will change:
int ledState = LOW;             // ledState used to set the LED
long previousMillis = 0;        // will store last time LED was updated

// the follow variables is a long because the time, measured in miliseconds,
// will quickly become a bigger number than can be stored in an int.
long interval = 1000;           // interval at which to blink (milliseconds)

void setup() {
  // set the digital pin as output:

  pinMode(ledPin, OUTPUT);      
}

void loop()
{
  // here is where you'd put code that needs to be running all the time.

  // check to see if it's time to blink the LED; that is, if the 
  // difference between the current time and last time you blinked 
  // the LED is bigger than the interval at which you want to 
  // blink the LED.
  unsigned long currentMillis = millis();
 
  if(currentMillis - previousMillis > interval) {
    // save the last time you blinked the LED 
    previousMillis = currentMillis;   

    // if the LED is off turn it on and vice-versa:
    if (ledState == LOW)
      ledState = HIGH;
    else
      ledState = LOW;

    // set the LED with the ledState of the variable:
    digitalWrite(ledPin, ledState);
  }
}

int pinled1 = 13; 
int pinled2 = 12; 
int pinled3 = 11;
int pinled4 = 10;
int pinled5 = 9;
int pinled6 = 8;
int pinled7 = 7;

void setup() {
   pinMode(pinled1, OUTPUT);
   pinMode(pinled2, OUTPUT);
   pinMode(pinled3, OUTPUT);
   pinMode(pinled4, OUTPUT);
   pinMode(pinled5, OUTPUT);
   pinMode(pinled6, OUTPUT);
   }

void loop() 
{
}