Hey Mate well i had to go out i tell you the problem well look at this line

"....
.
border="0" src="thumbnails/SNC12484_JPG_jpg_jpg.jpg" alt="" /></a> </td>
"
the code is wrong it should be

<tr valign="bottom">
<td align="center"><a href="http://www.webforumz.com/images/SNC12484_JPG_jpg_jpg.jpg"><img border="0" src="thumbnails/SNC12484_JPG_jpg_jpg.jpg" alt="" /></a> </td>

also the image URLS are completely wrong cause when you type the URL of the image it doesnt show so check that and then also for the Thumbnail images check URL for those too and if you get stuck PM me and i will help you

Thanks
Aaron