SPNego in IE 7

Hi Experts!!

We have implemented SSO Configuration between ADS and Portal 7 with SPNego wizard. The problem is that with Internet Explorer 6 it works perfectly, but with Internet Explorer 7 it doesn't wok, the logon screen appears.

I have configured de Internet Explorer Advanced Options in both cases as the wizard says:

1. Adding the *.host.domain in sites of local intranet zone

2. Enabled Windows Authentication (set to true)

So, I dont know what could be happening with IE7. I'll really appreciate your help!

Regards.