How do i set the background of a table cell to an image?

Well your code would be something like this

<table width="200" border="0">
<tr>
<td background="bgimage.gif">&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
<tr>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
</table>

You just put background="bgimage.gif" in the the td, for whatever cell you want.