Could one not add something to the phpinclude template?
Code:
if ($forum['forumid']==XX) {
$mylogo = "<img src=http://www.mysite.com/images/logo1.gif>";
}
Then in the Forumhome or Forumdisplay, just change the vblogo default to $mylogo and it should change depending on the variable set in the above code. Repeat for the number of different logos you want for each different forum category.
XX = forumid #
Syl...