Originally from ticket #1373.
I asked this question once before but it was in the old forums.
How do I increase the width of the sidebar? I want to be able to put 336x280 ads in the sidebar because every article I read says that these convert the best.
That size though leaks over the sidebar.
in css/blocks.css you will find width classes used in the theme. The sidebar uses w_280 and w_260, content: w_660 and w_620. You will also have to deal with style.css, as many elements will fly over the border. Cheers!