Hi Augusto,
>I have a form who has a textbox and a grid that show records..
>Im trying to get that when i move into the grid, thats it, when i go to up or down record by record the textbox move to the front of the line of the grid when the cursor is.
If I understand correctly try something like this in your AfterRowColChange:
TextBox.Top = This.Top + This.HeaderHeight + This.RowHeight * (This.RelativeRow - 1)
Is that what you need?