Well, it will all depend on how wide the image is that you have – you could try giving each cell in the table its own attribute (width).. it will also depend if you want the table to have a border which needs to be taken into account.
try this…
replace “(” with this “<" 
(table width=”790″ border=”0″>
(tr>
(td width=”390″>whatever you want (/td>
(td width=”390″> (img src=”image.gif” width=”390″ height=”50″> (/td>
(/tr>
(/table>
if it is total bollocks.. let me know and maybe one of the html buffs could show us how…