When I click on a cell, it clicks a whole group of cells. I only want one
cell clicked. This is very frustrating and I can't get it to just click the
one cell no matter what I do. I am not clicking the Control button with it.
I tried re-installing Excel, restarting, re-saving the file and nothing
worked. I have Windows XP, a new computer, MS Office 2007.

Why does it do this?