registering webservice

hi people,
i've developed a webservice i would like to register with the UDDI registry. However everytime i try to get to the page, it either tells me that this is an invalid microsoft passport site or it doesn't do anyting when i click on passport sign in and just takes me back to the exact same page. Is there anotehr way to register or is there another url which does work? The url's i am using are http://uddi.microsoft.com and www.uddi.org. Any help will be appreciated, thank you