OK, you want colThree's float element to be set to
float:right;
and then after the columns
but before your footer you want to insert a <div> with the following properties:
<div style="clear:both; height:0; visibilty:hidden;"></div>
just like that and then give it a try in FF, and work from there. that will solve the problem of the three columns not lining up like they do in IE.
Try that and get back to me,
Boog's