Here you is the conditional:
PHP Code:
<if condition=$foruminfo['forumid']=="GTAIV_forum_ID"><img src="http://www.consolecommunity.com/forum/images/misc/GTAIV.gif" /></a><else />
<if condition=$foruminfo['forumid']=="Saints_Row_forum_ID"><img src="http://www.consolecommunity.com/forum/images/misc/SR.gif" /></a><else />
<img src="http://www.consolecommunity.com/images/styles/console/misc/leftbg.jpg" /></a></if></if>
Replace GTAIV_forum_ID with the suited forumID.
Replace Saints_Row_forum_ID with the suited forumID.
Upload
http://www.consolecommunity.com/foru...misc/GTAIV.gif and
http://www.consolecommunity.com/foru...es/misc/SR.gif
I typed the above from memory, so if there is any problem with it, let me know and I'll correct it.
I assume that it would work if you add this to your main CSS -> extra CSS attributes.