each time I go on the Internet with this computer
I will browse using Internet Explorer and another Internet Explorer browser page will open to IWantU.com stating that your search was successful here are your results.
I have run spyware programs, have a firewall & Norton Anti-Virus 2002.
Windows XP Home.
I searched the registy for iwantu came up with nothing.

Suggestions on how to remove this or why it shows up?

please follow owen's Instructions and then post your log in the Spyware, Adware, Viruses and HijackThis Logs section (Not Here).