You can also make a cell in one row stretch across two cells in another. Like this:

To accomplish this, you have to use the colspan command. Just add colspan=2 to the <td>, and you'll be all set. "colspan=2" means that that cell should span across two columns.

<table border>

<tr>
<td colspan=2>Cell 1</td>
</tr>

<tr>
<td>Cell 3</td>
<td>Cell 4</td>
</tr>

</table>