Hi compact, all I can do is suggest replacing
Code:
<div class="headpic"><a href="{vb:raw vboptions.forumhome}.php{vb:raw session.sessionurl_q}"><img src="/designs/cyborg/sp.gif" alt="{vb:rawphrase x_powered_by_vbulletin, {vb:raw vboptions.bbtitle}}" width="524" height="92" /></a></div>
to
Code:
<div class="headpic"><a href="{vb:raw vboptions.forumhome}.php{vb:raw session.sessionurl_q}"><img src="images/logo.jpg" width="1000" height="120" alt="your forum name" /></a></div>
bold is what your changing, change your image source/dimensions