I'm working in a SharePoint 2010 site. My top navigation had an extra root level item put in there by default, and I wanted to get rid of it because I set up my own. When I set up my navigation, I set the Home item to have some sub-levels, such as, Org Chart and Personnel list. It was our preference but me to have two links to the "home" page. This post from Erik Swenson solved my issue. Since it required a change to the master page, I used a copy of my v4.master so I didn't edit the original.