In line 182, which is a few lines under where the <body> starts is the line for the logo image. Here is my line:
<img src="', $settings['header_logo_url'] , '" width="100%" height="125" alt="', $context['forum_name'], '" />';
I just added the nomal width and height code after the image code. Just have to make sure it is OUTSIDE the quotes of the image code.
If it helps, it's 4 code lines above the line: // Display user name and time.
Hope that is the info you wanted...
- Greg