Sorry I wasn't more specific, but you were a little snippy. Basically, I am very familiar with Excel, but not with the Mac version. I created a canned budget worksheet and cannot get the Autosum to work. I can see the icon, but it is not highlighted. I read the help instructions and it says that all you do is click on the cell below your column of numbers and click on Autosum and it will automatically add for you. What have I tried, you ask? Everything I know, exploring every possibility I could think of, and general button-clicking. Sorry I can't be more specific. I just can't figure it out...