2) Go to your Admin CP. Go to Style & Templates -> Style Manager. It will list all the styles you currently have on the site. To the right of each style will be a "<< >>" button. Click on that to expand the Style of choice. Now you will have a list of templates in a box. Scroll down until you see the template named header. Click on the Customize button (or the edit button if its already been editted before). You will see this
Code:
<!-- logo -->
<a name="top"></a>
<table border="0" width="$stylevar[outertablewidth]" cellpadding="0" cellspacing="0" align="center">
<tr>
<td align="$stylevar[left]"><a href="$vboptions[forumhome].php$session[sessionurl_q]"><img src="$stylevar[titleimage]" border="0" alt="$vboptions[bbtitle]" /></a></td>
<td align="$stylevar[right]">
</td>
</tr>
</table>
<!-- /logo -->
Or something similar to that. You can just remove that and save the template. id only recommend doing it this way on the default style. Custom styles tend to have a lot more added into that and can make the site look funky without that stuff in there or without other editting of the style.