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Change Mouse Scroll Lines
http://www.vistaarticles.com/articles/342/1/Change-Mouse-Scroll-Lines
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Published on 02/24/2007
 
Change Mouse Scroll Lines
Change Mouse Scroll Lines

Default is 4 lines per scroll.

1. Click on the Start Button and key in regedit and hit Enter.

2. Navigate through HKEY_CURRENT_USER\Control Panel\Desktop.

3. Scroll to the bottom and edit WheelScrollLines. Set this to a lower value for a more sensitive scroll wheel. larger for less sensitive.

4. Restart.