I2C Pic Communication

[Beatha.Gaire.Gra]

Ok so I am trying to get 2 Pic 18F452 to talk to each other over I2C using MPLABS C18. I am using proteus and loading in my programs for my slave and master pics into the 2 pics by right clicking and clicking 'edit Properties' and opening my programs in HEX in the program files tab.
However nothing seems to be happening. I am very new to I2C so I am more the likely missing something important here are my 2 pieces of code

Slave

#include <p18cxxx.h>
#include <stdlib.h>
#include <stdio.h>
#include <usart.h>
#include <i2c.h>

#pragma config WDT = OFF
#pragma config OSC = XT     
#pragma config PWRT = OFF

int Address;
int Number;
char Letter;
char str[10];




void main( void )
{

	OpenUSART( USART_TX_INT_OFF & USART_RX_INT_OFF & USART_ASYNCH_MODE &
				USART_EIGHT_BIT &USART_CONT_RX, 25);
 	TRISC=0x00;
	PORTC=0;
	
	OpenI2C(SLAVE_10, SLEW_OFF);
	while(1)
	{	
		while (BusyUSART());

		while(DataRdyI2C()==0);	

		Number=getcI2C();

			AckI2C();
	
		ultoa( Number, str );
		while (BusyUSART());
	    putsUSART( str ); 
	}
}

Master

#include <p18cxxx.h>
#include <stdlib.h>
#include <usart.h>
#include <i2c.h>

#pragma config WDT = OFF
#pragma config OSC = XT     
#pragma config PWRT = OFF

int Address=0b00000000;
int Number=22;
char Letter='A';


void main( void )
{
 	TRISC=0x00;
	PORTC=0;
	
	OpenI2C(MASTER, SLEW_OFF);
	while(1)
	{
		IdleI2C();
		StartI2C();
		WriteI2C(Address);
		while(SSPCON2bits.ACKSTAT!=0);
		WriteI2C(Letter);
		while(SSPCON2bits.ACKSTAT!=0);
		IdleI2C();
		StopI2C();
		
	}
}

Thank you very much