From : http://www.mvps.org/dmcritchie/excel/mouse.txt
MS Excel for Windows -- Mouse Settings Customize Windows START, Settings, Control Panel --> Mouse Left Button: Left-click (global/default) Right Button: Right-click (global/default) Wheel Button: Enter (global *override*) Large Thumb Button: Back (global/default) Small Thumb Button: Forward (global/default) Excel: Tools->Options->General->"zoom on roll with intellimouse keep this off or you won't be able to use mouse for a vertical scrolling, you can still use Ctrl+wheel to zoom in/out. VBE problems with scrolling: make sure you do not have exceptions in Control Panel, Mouse, General, Advanced or for some older drivers there is a tab near the end or from Wheel tab, Wheel trouble shooter, Advanced button remove any added override that does not respond to scrolling or for some make sure Use MS Office Compatible scroll is checked (even if available may not be needed) If still not working see this thread http://google.com/groups?threadm=eFn...TNGP15.phx.gbl