So far so good. I managed to get my website looking a little better, but if anyone knows how to have a 3-column layout where the sidebars are fixed width and the center section expands to fill the available width, let me know.
This is as close as I could get, and the wider the screen gets the more unused space there is to the right of the text in the center section. If the browser gets too narrow, the right sidebar will move to the bottom of the page.
Hopefully I'll get it corrected soon. :)
Edit: I put it back to % per section - looks better most times. Still working on it tho.