Hello all. I have been pulling my hair out trying to get my website to display correctly in older IE browsers. It is designed as a 2 column layout with the left column containing 3 columns. In older IE browsers the columns do not set as 3 but ride the left - one below the other. I do not have much experience with CSS.

Here is my website.
Here is the style sheet

I don't expect someone to fix my problem, but if one of you gurus see something obvious I appreciate a few pointers. Thanks.