>Christian,
>
>Set the format and inputmask properties of the textboxes in the column. Also set the column's sparse property to .F.

Jim,
Yes, this was it. Now, something more difficult (I guess so): When I entered something in a field (in the grid) the focus goes automatically to the next column, even if Tab is .F. for this column. but I want to jump down to the next record, because the user is only allowed to enter one field (column) in the grid.
Have a solution?
Thanks to Jar Jar...