What you might want to Google when it comes to IE6 and lower is to code css specifically for it. You'll need HTML conditional statements:
<!--[if IE]><style type="text/css">@import "css/IEstyle.css";</style><![endif]-->
That calls all IE browsers, all the code is located in a IEstyle.css external file.
<!--[if lte IE 6]><style type="text/css">@import "css/IElt.css";</style><![endif]-->
That one calls IE6 and lower in again an external file. Of course you can hop right to it and just put the CSS between the statements.
<!--[if lte IE 6]>
<style type="text/css">
body{
background: black;
}
</style><![endif]-->
It might have been nice to show a link to the page, maybe you don't even need to implement conditionals.
Good luck.
