How to add unbound row and column to bound datagrid?

Hi,

I’m using VB.NET 2005.

I link a datagridview to a table from SQL server database. the grid will show all the columns from the table.

So my question are:

1. How can I add an unbound column to the first column of the grid?
2. How can I add a new row to the end of the grid to display the grand total?

Thanks,