Sounds like one of your ALT keys is stuck.

ALT + TAB moves between open applications.


Gord Dibben Excel MVP

On Mon, 21 Mar 2005 13:53:05 -0800, ESL in Tyler <ESL in
wrote:

Help - All of a sudden my Tab key will not work in a worksheet. If another
program is open, when I press Tab the other program opens. If nothing but
Excel is open, nothing happens. I am lost without the use of my Tab key!

I already checked Tools-Options-Transition key - that wasn't the problem.

Thanks.