Flash banner and menu spread

Hello there, the website I am working on is http://www.nationaldetroit.net.
I am just getting going and before I put a bunch more work into this, I wanted to know if I could do what I wanted.

I am using the “raindrops” theme, that I have edited though the user interface. My issue is that I would like the menu bar at the top of the page to be equally spread out to the width of the page, instead of being aligned left. I did not find any way to do this short of editing the style.css, and sorry to say, I have no experience doing that.

The other issue is that I would like to have a flash banner for my site where the “the sanders that set the standards” banner is now. I have a .swf to put there, but cant figure out how. I have seen other people on the forums asking this also, but have been unable to figure it out.

Any help would be most appreciated.