Hi,
Instead of Slider, why dont u use a
"Flat ScrollBar"
which comes with "Microsoft Windows Common Control 2 6.0"
Make Oientation = 0 (Verical)
and give Min / Max.
For the Visual Speed, Use a Line Control and a Shape(Circle) Control, Place the Line as the adius of circle, Change the CoOrdinates (X1,Y1) of Line Control Proprtionate to the speed. keeping (X2,Y2) Fixed....
REgards
Veena