mozilla vs IE: float problem (url included)

[MediaDesign]

pls check: http://www3.telus.net/public/a7a96826/css.html

float: right problem--> I need for the div "contentrig ht" to line up
with "contentright2c ol"
this works perfectly in mozilla but I.E 6 pushes contentright2co l
further to the right than intended. the css for both divs is identical
expcept that the contentright2co l spans over a larger area.

thanks for the help!

#contentright {
width:231px;
margin:0px 8px 0px 0px;
padding:0px;
float:right;
background-color:#eee;

}
#contentright2c ol {
float:right;
width:472px;
margin:0px 8px 0px 0px;
padding:0px;
}