I have XL2007, but I have not really used it all that much, so I am probably
not the person you need for some of these questions. All I know is that when
I added the Analysis ToolPak add-in to my copy of XL2007, the Data Analysis
tool panel appeared on the Data tab automatically, so the process I outlined
worked for me. The functions I was talking about are the ones that you can
use inside of formulas you construct on the worksheet... those functions are
supposed to be built in, so if that is what you meant by "functions", then I
would advise you to just try using them and see what happens. If you are
unsuccessful in your efforts, I would advise reposting your question (adding
what you have tried) and see if another of the volunteers here more familiar
with XL2007 than me responds. By the way, make sure to mention that you are
using XL2007 in that reposting (if you need to repost, that is).