Do you want a row with nested data from a new dataset or just want present information from the same record on two rows?

Same record, broken into two rows so it doesn't stretch the browser all to hell.

I would use a template column instead of a bound column. This way you could use HTML in the template and format the row as you like.

so.. if I had a row with 10 fields (which looks like hell on the webpage, much less printing) and I wanted to display a double row for each record, with 5 pieces of data in each row... all pertaining to the same record... I would use 5 template columns, and double up the data in each one?

Actually, I would probably end up using a datarepeater instead. My code would look something like this...
<asp:repeater id="Repeater1" runat="server">
<headertemplate><table><tr><td>Column1</td><td>Column2</td><td>Column3</td><td>Column4</td><td>Column5</td></tr>
</headertemplate>
<itemtemplate>
<tr><td>Field1</td><td>Field2</td><td>Field3</td><td>Field4</td><td>Field5</td></tr>
<tr><td>Field6</td><td>Field7</td><td>Field8</td><td>Field9</td><td>Field10</td></tr>
</itemtemplate>
<footertemplate>
</table>
</footertemplate>
</asp:repeater>