I've never come across this and as far as I'm aware this is not an option in
excel.
Check your settings for your mouse in control panel and see if it has any
options there that may have changed (although never seen this on a wheel
mouse before).
If not then reinstall your mouse driver as it may be corrupted.

Nick

"Karline" wrote in message
...
hey I use excel all the time and it has never scrolled across before i
only
want it to go up and down how do i change this