Forum:Tooltips/rollover boxes! Links provided. PLEASE HELP! (Desperate)

I have searched far and wide, and my lack of any CSS skill has not helped, either! I am so desperate!

I run Merlin Wiki. I'm behind the implementation of the visual elements, and I did the work on those featured boxes you see on the page. But I'd like to take it further!

I was super jealous when I saw the "Tooltips" template this site has. Take a look with your own eyes: http://sacredseasons2.wikia.com/wiki/Areas

Rollover "portal types" and bingo! That is so awesome!

I've searched forums far and wide and tried some CSS/.js stuff myself, but I can't get it working! Hopeless, I know! I've browsed the other 'tooltips' topics on the forum but to no avail.

If you could give me a kickstart.. start me off.. put me in the right direction.. be clear and concise, what do I need to do to get this on Merlin Wiki? Of course I'll want the colour altered to fit in with my Wiki (a dark brown colour with white text).

Please don't tell me "just paste this into here, blah, blah", what will I need to do to implement it onto a page in the first place?

THANK YOU!!!