Add images on forum board title

[richards112]

Hello, i have seen this on a few vbulletins now, and would like to know how to do this:
I would like to put an image of something on my actual forum board, like for example if i made a forum called "Test" and the child boards were test 1 2 3 etc
I would like to know how to put an image on the "Test" forum, on the left, just before the forum title.
Does anybody know what i mean?
Help would be appreciated.
Thanls