is there a hack for this ?

[Rodney]

when my members is trying to get in to a forum where they have no access..
now they get this message "There have been no posts in the last 30 days in this forum" and I want this message to show up "You are not logged in or you do not have permission to access this page. This could be due to one of several reasons"
plz help

[Xenon]

if they have no acces to a forum they would get the no üpermission error.
the 30 day message just occurs if they have acces to get into the forum

[Rodney]

But I want the forum to be visable on forumhome page.. and if I change the forum permission they cant see th forum
I asked over at vbulletin.com and they said I have to hack my board ??
and I'm looking for the name of this hack :)