Alignment problems with Adsense code

i have been trying to use Adsense . Put code in single.php, sidebar.php, etc and also tried the adsense plugin. the ads are there but even with the Default them the alignment of the blog is messed up and the block of four ads is partially out of the post area.

any suggestions or is there a possibility of putting together some sort of tutorial for using Adsense with WordPress.