Drupal theme problem

Hi.
I'm sitting here and making a 'look-a-like' theme of PunBB for Drupal. Drupal uses php and oo (what that now is) for it themes that I can't. I can understand the "code" to the bigger part but I don't know what some things do.

Here is my not finished future site that will use the theme:

As you can se there is some unused space at the right side. I have made some thing in the "code" so it bugs out if i put blocks (Meny and Blogs are two blocks) and the space i smaller. It shuld be: If no block = 30px empty space from screen end. If block = 20px empty space from the block. Now I have made so the "main" part (nodes) are 190px from eatch side. 30px space, 140px block, 20px more free space on the left side and the revers on the right side.

One other thing... The theme isn't so IE compatible. The best thing is to have the theme to took exatly the same in any browser as Firefox 0.9.1, that I use.

Adress to theme:
Adress to css:

Someone that has a helping hand?

// Fluffy