Changing the scroll wheel speed
To change the scroll wheel speed:
1Click the Windows Start Button 
on the taskbar.
2Click Control Panel.
3Click Hardware and Sound, if it is present.
4Click Mouse.
5Click the Wheel tab.
6In the Vertical Scrolling area, adjust the number of lines per scroll by clicking the arrow buttons.
Or
In the Horizontal Scrolling area, adjust the number of lines per scroll by clicking the arrow buttons.
7Click Apply, and then click OK.
Wireless Mouse and Keyboard Troubleshooting
If the wireless mouse and keyboard do not respond, see “Synchronizing a wireless mouse and keyboard” in the “Using the Keyboard” chapter to resynchronize the devices.
Using the Mouse 43