You can make it so that groups can't download attachments in the forum permissions, but I don't think you can hide them. That would be a good option to add to the permissions list.
hmm on vbulletin some template code avaible for it,
<if condition="$show['attachments']">
<!-- attachments -->
<if condition="in_array($forum['forumid'], array(8)) AND !is_member_of($bbuserinfo, 5, 6, 9)">
<br>
<fieldset class="fieldset">
<legend>$vbphrase[attached_files]</legend>
<table cellpadding="0" cellspacing="$stylevar[formspacer]" border="0">
<font color="red">You cannot see attachments here.</font>
</table>
</fieldset>
<else />
i dont know much the ubb template codes but be sure some code for it avaible todo, hope some developer can answer me this question.
