Adding ads and widening side bars

Hi guys! I’ve managed to add an adsense ad between my header / navigation and site content, and widen my side-bars so the advertising can fit on the page.

However, my sidebars are overlapping the site content and the adsense banner. I can’t figure out how to move the sidebars down and out so everything won’t be so covered up.

Can anyone point me in the right direction to repair this?

Thanks!