Stop notices from appearing in-thread?

[tambo]

Is this possible?

For example, if I have a notice that is set to display in Forum X, is there a way of making sure it only displays on Forum X's thread index, and not inside the actual threads?

I'm assuming it's possible as the URL changes from:

http://www.domain/vb/forums/forumnumber-forumname

to

http://www.domain/vb/threads/threadnumber-threadname

...when you enter a thread.

I'm therefore assuming that the solution lies with an "if this script" conditional

<if condition=" THIS_SCRIPT == 'forumdisplay' ">

...but I'm not quite sure how or where to structure it. Can anybody point me in the right direction?