Custom MediaWiki Skin

I need a custom home page MediaWiki design for a kids wiki. The users will be between the ages of 9 - 12. There will be three "sections" to the wiki. First for kids, then adults and then teachers. I have a background, attached below. I'll need: 1. a home page (I have a swf that I'd like placed into top of home page.) I've attached swf. 2. a landing page for "kids" section, "adults" section and "teacher" section. There should not be big difference between the landing sections.