Just so you know there have been studies posted that say that people who drink diet soda will actually gain more weight than those who don't. The reason for this is that the fake sugars (Equal, sweet n low) don't properly interact with your body, causing a break down in the way your body process hunger signals. If you do some research you will see what i am talking about. But for a brief summary look at the following.

http://www.abc.net.au/rn/healthrepor...07/1969924.htm
http://www.cbsnews.com/stories/2007/...n2330142.shtml