I can't believe that I can't figure this out, but how can I change the active cell within a grid based on a user keystroke.

Specifically, I am using a grid for entering a lot of data. The user will press tab to move across a row, but when they press enter, I want to move down one row and back to the leftmost column.

On key label just doesn;t seem to have access to activerow and activatecell.

Thanks