Please let us know the url of the page you have problems with and we can look at it and offer suggestions. Most things should work properly in ie6, but often times we use an ie6 conditional css or .js to fix major discrepancies. It is possible those files aren't referenced properly.
Although IE6 popularity is dwindling, we are still commited to supporting it, so please let us know when you have issues and post the url demonstrating the problem. We will look into it and offer our advice and if there are issues we can fix we will.