@ Roxie: most definately so.
you should have something like this
http://www.dizzam.com/daboard/
http://www.dizzam.com/groups/
and your config should read
PHP Code:
<?php
// ## Changes Directory so it can accesss vBulletin IF we are outside the forums folder, if not this is not nessary ##
chdir("../daboard/");
// ## Set's the base root directory back to the forums for all images ##
$img_forums = "/daboard/";
// ## Set GRPS to rewrite links and images automatically
$rewrite_links = TRUE;
?>
then it should work even on your subdomain.