<td align="left"><a href="forums.php"><img border="0" alt="TMTW Forums" src="http://i239.photobucket.com/albums/ff45/mybuddy25/header.png" title="TMTW Forums"></a></td>
Change it to:
<td align="center"><a href="forums.php"><img border="0" alt="TMTW Forums" src="http://i239.photobucket.com/albums/ff45/mybuddy25/header.png" title="TMTW Forums"></a></td>
Basically changing left to center...