Excel's Subtotal feature can render quick results when you need simple grouping calculations. Susan Harkins shows you how this powerful feature works.

Adding a condition to a simple revenue sheet might spell trouble in Microsoft Excel, but don't worry--a simple conditional function can handle the request.

For example - I have 7 lines reporting Firefox.<BR><BR>My task is to combine each instance of the same app, total the run time, and then total the front-most window time.