Getting selection from DBGrid

I have a form displaying the whole recordset of my database. Another form that is used as a search. The last form has the findings displayed in a DBGrid. I would like to be able to change the focus to the selected record in the first form when the record is double clicked or selected from the DBGrid. How would I do this?

Would appreciate help greatly, thanks,
Adrian Wickenheiser

try accessing the selected line in the double click event of the datagrid.