Um try these codes.
Option 1:
CODE
div.moduleMid, div.moduleMid1 {border: 0px;}
div.moduleTop, div.moduleBottom {display:none;}
Option 2:
CODE
div.module div.moduleMid li,
div.module h3.moduleHead,
div.module li.moduleItem,
div.module div.userComment,
div.module div, div.content
{background-color:transparent; border:0px;}
hr, div.moduleTop, div.moduleBottom {display:none;}
Or, you could always look at this tutorial.
Here.
See if any of these options help you.