I think the one you're talking about is WebBoard. PHP application.

You can also look into ASP.NET Forums (www.asp.net) which is pretty good, but requires a bit of code to customize.

+++ Rick ---

>One of the requests I have on a specific project is to install a small forum engine that does pretty much the job such as you can find on several other sites on the Internet. From my research, there seems to be one that is mostly used now. I don't know what it is. But, it allows the Webmaster to configure the layout, the styles, etc., so all this looks custom to the current site. Anyone would know or recommend something like that?