Sol.-

#include <LiquidCrystal.h>
LiquidCrystal lcd(2,3,4,5,6,7);
int i=0 ;  //i is set for row
int j;     // j is used for columns value and set it according to word lenght.
void setup()
{
  lcd.begin(16,2);
}
void loop()
{
  for(j=-9;j<=16; j++)
  {
    lcd.setCursor(j,i);
    lcd.print("NIELIT HQ");
    delay(100);
    lcd.clear();
  }
  for(j=16;j>=-9;j--)
  {
    lcd.setCursor(j,i);
    lcd.print("NIELIT HQ");
    delay(100);
    lcd.clear(); 
  }
}

	Pins connections:- For LCD
					LED- connected to ground having resistor 1kilo ohm.
					LED- connnected to ground.
					DB7- to Digital pin 7
					DB6- to pin no. 6
					DB5- to pin no. 5
					DB4- to pin no. 4
					E(Enable)- to pin no. 3
					R/W (read/write)- ground connection
					RS - pin no. 2
					V0 - ground with resistor 330 ohm
					VCC- power 5v
					Gnd- ground.