Does anyone know how to share the connection between the x-box and laptop when the internet has a log in page? I have no problems sharing when it is an open or wep protected connection or even with my Sprint card. Im staying in a Hotel for a while for my job, I have gotten it to work for brief periods of time by disabling my wi-fi and unplugging my xbox, sharing the connection, connecting to the wi-fi and logging in, then plugging the xbox lan back in. But about 20 min I get booted. When I bridge the two It seems to work, the x box has a IP from the router, and in the network test the IP and DNS pass but when it gets to MTU it fails. Any help would be much appreciated.

The place you're staying at may have restrictions on the connection that won't natively support xbox live. You might want to get in touch with them to see if they can set you up with a privilaged connection.

try posting on official xbox forums - they are quiet helpfull

True! but it's an older topic, and they said they were staying at a hotel, chances are they are not there anymore :)