Hrmm I don't see to much of a diff between the two but the answer to your problem is to create a new stylesheet just for IE .. well not create a whole new one just fix up the one you have so it works in IE and save it as ie.css or sumthign like that then go to your code

and use this code

<!--[if lte IE 6]>
<link rel="stylesheet" type="text/css" href="ie.css" />
<![endif]-->

basically what that does is it tells the code to use ie.css when the user is using IE 6 or lower ... google it and you will find more answers ...

plus a friend of mine said there is a easier way but I don't know it so ya google it