How to replace forum_new.gif?

[Baba Wawa]

I'm trying to replace the default buttons for "No new posts in forum" and "Forum has new posts." I've succeeded in replacing the ones at the very bottom of the page.

However, as you look vertically down the page, the same old default buttons still appear next to the name of each forum.

The names of the default buttons are clearly "forum_new.gif" and "forum_old.gif". When I search in the templates for those phrases, however, I find only one reference to each -- the same ones that I used to insert the new icons at the bottom of the page.

Where are those other guys hanging out? how can I change the icon next to each forum name??