[Theme: Portfolio ] Custom links

Hello,

In my site, http://www.justinriley.info/newwordpress/ I would like the “About”, “Portfolio”, and “Audio” tabs in the main navigation menu to default to “Home” when clicked. Now when they are clicked it just takes you to an empty page… This may have to do with custom links but I am not sure how this is done. I would like it if when you click on these three tabs it just stays at the home page as the sub menus are where the content is. Can anyone please help me with this?

Thanks,

Aaron