error: ambiguates old declaration 'void setup()'

well… i just get started with arduino… the tools i use is…
Hardware:Arduino duemilanove& Arduino LCD&KeyPad Shield
Software:arduino-0018 addon a libraries LCD4Bit
i was just using the example code… but come out a error… and i dunno how to fix it ;D can any expert lend a hand?

============================================
#include <LCD4Bit.h>

LCD4Bit lcd = LCD4Bit_(2)

char msgs [5][15] = {"Right Key OK ",
"Up Key OK ",
"Down Key OK ",
"Left Key OK ",
"Select Key OK ",
int adc_key_val[5] ={30, 150, 360, 535, 760 };

int NUM_KEYS = 5;

int adc_key_in;

int key=-1;

int oldkey=-1;

int setup () {

pinMode(13,OUTPUT);

lcd.init();

lcd.clear();

lcd.printIn(“KEYPAD testing… pressing”);
}

void loop()

{
adc_key_in = analogRead(0)
digitalWrite(13, HIGH);
key = get_key(adc_key_in);
if (key != oldkey)
{
delay(50);
adc_key_in = analogRead(0);
key = get_key(adc_key_in);
if (key != oldkey)
{
oldkey = key;
if (key >=0){
lcd.cursorTo(2, 0);
lcd.printIn(msgs[key]);
}
}
}
digitalWrite(13,LOW);
}

{
int k;
for (k = 0; k< NUM_KEYS; k++)
{
if (input<adc_key_val[k])
{ return k;}
}
if (k >= NUM_KEYS)
k= -1;
return k;
}

error: new declaration 'int setup()'C:\Users\Demonx5\Desktop\Arduino Project\arduino-0018\hardware\arduino\cores\arduino/wiring.h:126: error: ambiguates old declaration ‘void setup()’

int setup ()  {

That's "void setup"