Formatting out in certain browsers

Hi

I’m new to WordPress so am feeling my way through.

In internet exploorer 07 the layout on my landing page header seems to have issues.

My other question for now is: how do I format/add custom information/images to my side bars?

I want to add a global news section with links to other websites and also want to add three thubnail images to side bar 2 (right side).

Any help would be great.

Thanks