Controlling vertical scroll bar in a list control

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MFC

How can we control vertical scroll bar in a list control by adding message handler or by any other way?
Like in a dialog box we add message handlers to handle the vertical scroll bar(OnVscroll()).how can we do that with list control?

thanks

[edit]
Urgency removed: It may be urgent for you, but it isn't to us. Stressing the urgency is a good way to get peoples backs up, and slow down responses - it make them assume you have left it too late to do your homework.
Multiple Question marks removed. One is sufficient.
- OriginalGriff
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