Removing the right sidebox -> Middle content width does not fill in space

[askfritzdotcom]

So I just removed the right sidebar from my zencart store so that there is more width to the center content (or now my right content table).

View here:
http://208.109.212.191/

I went into the CSS for my classic template (the template that I chose to edit myself) and all I could think to do was look at the mainwrapper width which = 750px but that doesn't make my new right content box fill in all the way to the right side.

I also cannot find the CSS line that controls the category link color on the sidebar (GREEN) and at the top header (GREY). Where can I locate and change these? AND if possible can I change the TOP category links to individual images?

Thanks for your help, you guys rock.
Tom