@mrsbeiss: you need someone who understands how to clean up that code.
You have a lot going on, on your site, possibly a lot of plugins installed. Sometimes a plugin turns out to be the cause of some of the problems. The typical way to test is
1) back up the database
2) disable all plugins
3) see if the site now works in IE
if it does, turn the plugins back on one by one, testing each time if it still works in IE.
if it doesn't work in IE with all plugins off then plugins are not the problem, there is code that needs cleaning up.
If you want to hire someone to do this a good place to ask is on the WP Pros board. You have to join the list to post there. In an email explain what is wrong and what you are looking for. Ask for background info and rates. People will reply to you.