This is suprising... I don't have a perfect solution fro you, but I suggest you take a look at the example here, the problem was slightly different to yours but I think you could use a similar solution.
You can hide the vertical scrollbar of your table control and place next to it a vertical slider and use the slider's value to set the index row that's visible at the top of the table.
Quick example attached.
Hope it helps
We have two ears and one mouth so that we can listen twice as much as we speak.
Epictetus
Antoine Chalons
