just add a user option (2 radial buttons, top one equals "LOGO_NAME_1" second one is "LOGO_NAME_2") to ask which header they want
then find:
HTML Code:
<img src="$vboptions[bburl]/$stylevar[titleimage]" border="0" alt="$vboptions[bbtitle]" />
and replace with
HTML Code:
<if condition="$bbuserinfo[fieldXX] == 1"><img src="$vboptions[bburl]/$stylevar[imgdir_misc]/LOGO_NAME_1.gif" border="0" alt="$vboptions[bbtitle]" /><else /><img src="$vboptions[bburl]/$stylevar[imgdir_misc]/LOGO_NAME.gif_2" border="0" alt="$vboptions[bbtitle]" /></if>
now this was requested
here so i aint really got a screenshot as i didn't install it but i've been assured it works lol

enjoy.