Usually I have small issues with IE not rendering the site properly and they are fixed easily. But now I am having a huge issue and I have spent 45 minutes trying to fix it.

The site is valid XHTML and CSS plus it renders properly in every other browser I have tried.

If you check this page in IE, you will see that the sidebar is under the content:
http://colourcut.ca/services.php

On every other page it is right beside it...

Does anyone know of a technique I could use to fix this?

I am personally tired of IE and it's issues with rendering designs. Every browser I have used always renders my designs properly on the first try, except for IE.

EDIT:
If you also check in browsershots, the only one not rendering properly is... you guessed it... internet explorer :/
http://browsershots.org/http://colourcut.ca/services.php