How many eggs should i eat in a serving to loose weight?

im going to try and lose weight by excersising and eating 5 times a day.(portion controlled of course). i will also use meal replacement shakes from GNC that are very nutritious. id also like to eat eggs for protein but i dont know how many i should eat. how many would you recomment for some one like me? 270lbs 5 ft 6 inches tall. thanks.