Please view Phase 2 Communications || VoIP Home Phone, Satellite TV and related Home Services

In Internet Explorer there is excessive spacing under the HR tags in the colums. In Firefox it displays perfectly. What can I change to make IE get rid of it?

Zero out the padding AND margin on the <hr>s.

I changed the CSS

hr {padding: 0px 0px 0px 0px;
       margin: 0px 0px 0px 0px}

should this be correct?

Yes.
You can shorten that to:
hr {
padding: 0;
margin: 0;
}