You mean like I did here, but on the right side?

If so, you want to add an HTML TABLE here:
Control Panel » Display Options » HTML Includes » Default Header

Here's an example. Adjust accordingly...

Code
<BR />
<TABLE align=center width=90%>
<TR>

<TD align=center valign=middle width=50%>
<!--// FIRST COLUMN FOR WHATEVER //-->
<!--// CURRENTLY EMPTY //-->
</TD>

<TD align=right valign=middle width=50%>
<!--// SECOND COLUMN //-->

<a href="http://YOURURL/PATH/TO/ubbthreads.php?ubb=cfrm"
target="_top"><IMG width="300" height="50"
src="/PATH/TO/YOURIMAGE.GIF" border="0"
alt="NAME OF YOUR SITE"></a>

</TD>

</TR>
</TABLE>
<BR />

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