Change Style of First Post (from vb2 hack)

[hockyfan]

I'm a bit confused as to how to do this; how exactly do I get/make a template for use in a specific forum, and consequently have the first post in that forum look as it does in kira's example?

I can't really use the articles hack since I have a lot of current "threads" which I would need to be made into articles, and apparently there's no way to do that. So changing the templates of that forum would really work well for me.

h