Datagrid Question

[Marty Knapp]

I have a datagrid with several columns, column 4 of which contains a 
number. Under the datagrid I have placed a field that keeps a total of 
the values in this column. I would like this field to match the width of 
column 4 and align itself directly under it so that if a user changes 
the column width, my total field will realign itself with the width and 
placement of the column. How would I go about doing this?

Thanks,
Marty Knapp