This setting controls whether smooth scrolling is used when viewing messages in Microsoft Outlook Express 5.0 and 6.0.

1. Open the Registry Editor click on the Start button on your taskbar, then click on Run and type "regedit" and click on OK to start the regedit utility.
    
2. Expand HKEY_CURRENT_USER\Identities\{Unique Identity}\Software\Microsoft\Outlook Express\5.0\Trident\Main (see picture 1).
   
   

   Picture 1

3. Create a new DWORD value, or modify the existing value, called "SmoothScroll" and set it according to the value data above.

Note: This feature may slow down Outlook Express when navigating messages with lots of graphics.