Forms Data Controls :: Add 3 Rows To Datagridview Footer?

I need to add 3 rows to a footer, i did a total but dont know how to add 2 more,

I have a variable credits that i would like to display on the next line and then net the 2 on the 3rd line.

I have looked at properties of the e.Row and was thinking if i could add a table?? Is there a to table method of datagridview? That way i could add the rows?

protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Footer)
{
double totald = Convert.ToDouble(dt.Compute("Sum(Bal)", string.Empty).ToString());
e.Row.Cells[0].Text = "Total";
e.Row.Cells[0].Attributes.Add("align", "left");
e.Row.Cells[2].Text = string.Format("{0:n0}", totald);
e.Row.Cells[2].Attributes.Add("align", "center");
e.Row.
}
}