Need HTML Assistance/Advice

Hey -- if anyone knows how I can break into the blog-format code so I can maximize the blank space on the left and right sides of my blog, please send me a note or leave me a comment. I'd be happy to send you the blog code and you can edit it for me.

I could be filling that space with so much more junky information, Air Force pitches, etc.

Ideally, I'd like a 3rd column on the left, the same width as the one on the right.

Thanks!