Today’s author, Monica Poinescu, a Software Developer in Test on the Excel team, gives an overview of some new functions in Excel 2007 and along the way shows us how to do some simple expense tracking. Considering the current economic environment, one may desire to better keep track of personal expenses. The new functions introduced in Office Excel 2007 simplify this effort. Here is how: given a list of expenses sorted by dates and categories (food, travel, clothing, etc.), how do I find how much...