>>This works GREAT for scrolling, thank you. But, how can I handle it when the user is tabbing accross Grid 1 so that Grid 2 follows in the same form as the srolling?
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>Here, you can fire Grid.DoScroll from Grid1.AfterRowColChange event checking e.g. for lastkey()=9. Another way is to check Grid1.LeftColumn property.

If you have been able to get this to work, Ed, you are truly more resourceful than I (which I suspect is true anyway :-)). I once spent a full 3 hours trying to get 2 grids to completely synchronize, and while I got pretty close, I couldn't get it to work flawlessly. AfterRowColChange doesn't fire consistently enough to use as a Synchronizer, and neither does Scroll. I am interested to hear if you have ever implemented this successfully.