How do I extend an Admin CP section?

[MGSteve]

I'm working on a mod to allow the addition of 'Sponsored By' boxes under the node captions on the forum page - that bits done, but what I'd like to do is extend the Node Tree 'Edit Forum' page and add an extra tab for 'Sponsor'. Then within the tab have a dropdown of the available sponsors. - Or even just add the drop down onto the 'Basic Information' tab.

What I can't work out is how to extend that section of the ACP - anyone got any suggestions as to where I can look?

 

[Jake Bunce]

There are template hooks you can use. Look in the admin templates. For example:

Admin CP -> Development -> Admin Templates -> forum_edit

 

[MGSteve]

Cheers Jake - dunno why I didn't just look at the templates first! d'oh.