When I choose few cells that I want to add, let's say I want to know the
total of cells 3,4 8, 9 and 10, I highlight each of them and see the total
below. Excel 2003 used to color the chosen cells a different color. In
2007, those cells are staying white. I've tried it on a couple co-workers'
computer and theirs appear to be highlighting in gray. Is there a setting
that needs to be adjusted on my computer? I use this feature all the time
and I'm lost without it!