Forum:Banner on main page help

I have two questions actually. The first is how to put a banner of the Main Page of a wiki. I currently work at the Fossil Wiki, and I was looking around on the Halopedia, and on their main page is a banner. Any ideas on how I can create one for the Fossil Wiki?

The second question is, I noticed that on a lot of wikis, including wikipedia itself, and on the Halopedia and Left 4 Dead wiki, that there is a little comment underneath the Title of the page. On Wikipedia for example, it says "From Wikipedia, the free encyclopedia" I was thinking of doing something like that for the Fossil Wiki as well, something along the lines of "From the Fossil Wiki, your source for prehistoric knowledge". I think you have to do something with media-wiki or CSS code or something of the sort, but unfortunately, I'm not that tech savvy.

Any help on either topic is greatly appreciated Thanks! --meghunter99 01:23, 11 April 2009 (UTC)