IE6.0 DSL Homepage Hijacked!

My homepage (Verizon.net DSL) has been hijacked by Spyware;whenever I attempt to login to my Verizon.net homepage I get sent to a non-existent page and get the error: Page not available ". The culprit appears to be ClickIt; it puts its redirection URL in front of my regular login URL so that, in effect, I go to a nonexistent location. If I manually remove the first part of the URL, I can get to the right page but I have to keep doing so manually. Any other option gets hijacked.
How do I fix this? Any and all answers would be appreciated.

Thank you