I'd like to change ONEsub-forum icon to a custom one

[Littlerocket]

Any ideas how I'd do it? Been looking all day at hacks, but none seem to offer that function.

I have a vids sub-forum and I'd like to add a little Windows Media Player icon as its statusicon.

Site is at http://www.forzamotorsport.co.uk/forum.php

It's the video archive icon I'd like to change.

Thanks in advance.