changing default width of datagrid attached to dataset

[Amos]

My datagrid is tied to the datatable below and since the datagrid's columns
"inherits" the names of the columns when I add them to the grid, I was
wondering if it would be possible for me to change the width of the columns
when I add them to the table.

This is how I add the columns to the table:

DataTableAddress.Columns.Add("Col1", typeof(string));
DataTableAddress.Columns.Add("Col2", typeof(string));
DataTableAddress.Columns.Add("Col3", typeof(string));

Is it possible to programatically resize them with these same instructions?
They're working fine like this so I don't want to have to declare a
datacolumn for all the columns (they're over 30 collumns in the table).

Thanks,
Amos