11
Maybe you should re-check everything again.
Ok download your default folder from your site into a folder. Open theme.html again and check:
<tr id="header">
<td id="headerlogo"><a href="<{$xoops_url}>/"><img src="<{$xoops_imageurl}>logo.gif" width="150" height="80" alt="" />a>td>
<td id="headerbanner"><{$xoops_banner}>td>
tr>
is
<tr id="header">
<td id="headerlogo"><a href="<{$xoops_url}>/"><img src="<{$xoops_imageurl}>logo.gif" width="900" height="115" alt="" />a>td>
<td id="headerbanner"><{$xoops_banner}>td>
tr>
Be sure to re-upload this.
Upload your new image with the name logo.gif into the default folder.
Then do what bassman said: Update module template .html in Prefs. Refresh your site and should happen.
Even clearing your own cache on your computer also sometimes helps me.
Also sometimes I upload stuff to the wrong themes folder. So be sure its the default folder. Good luck