How can i center my banner when i use the gooberheadblue theme.

http://cs2world.com

thats my site, as you can see the banner is not centered, and i've tried using HTML for the banner but < center > isn't working...

What am i supposed to do?

simplify your code:

<table border="0" width="95%" align="center" cellspacing="0" cellpadding="0" background="http://cs2world.com/themes/GooberheadBlue/topbackBG.jpg">
<tr>

<td><div align="center"><a href="http://cs2world.com/">
<img src="http://cs2world.com/themes/GooberheadBlue/logo.jpg" alt="Welcome"></a></div></td>
</tr>
</table>

while you have both the div and table centered you have the image set to align left. remember to update through admin.