CSS Question: Blocked Theme

I am trying to modify the blocked theme a bit in order to have three blocks just above the footer instead of two.

I have gotten somewhere but things are not lining out/up as well as they should.

Yu can see at http://www.shanghaientrepreneurs.com/dev3/ and my intention is to have the grey blocks above the blue footer become 3 real blocks, instead of the 2 they are now.

And also make them line out better as the right block is too big, eventhough I assigned a smaller width in the .css

Just shows I still have a lot to learn.

Any css master who could give help me out?

Thanks a lot