A friend of mine pointed out this to me:
www.weightlossresources.co.uk
You input your weight and height, and it figures out how many calories a day you will need to maintain or lose weight.
You then simply input everything you've eaten, and it tells you the calories and how many you have left.
Not only that but you can add on exercise whichs ups your calorie limit.
It comes with a 3 day free trial (nice). I was so impressed I joined - and it takes something special for that.
I'm using it to maintain my weight, and trim down a little
Let me know if any of you use it, and how you get on.