[Digital Jedi]

The code you posted above has Usergroups specified. So I presumed you were trying to show/hide something to/from a specific Usergroups. For instance...

<vb:if condition="is_member_of($bbuserinfo, 1,2,3)">CODE HERE</vb:if>

...will only show the wrapped code to Usergroups 1, 2 and 3. But you also wanted it to only show in certain forums, so you would also use...

<vb:if condition="in_array($forum['forumid'], array(1,2,3))">CODE HERE</vb:if>

...to only show code in forums 1, 2 and 3.

More efficiently, you would combine them if you want both cases to be true.

<vb:if condition="is_member_of($bbuserinfo, 1,2,3) AND in_array($forum['forumid'], array(1,2,3))">CODE HERE</vb:if>

CODE HERE will only show to Usergroups 1, 2 and 3, and only in forums 1, 2 and 3.

And yes, they would go wherever the description for forums is displayed in the templates. (I forget which one that is, at the moment.) They are "template conditionals", so that's the only place they work.