its an internet explorer setting ..go to tools..internet options..connections tab.
either make the wireless your default or untick always dial my default connection.
if all else fails get someone at the hotel to copy firefox to your memorystick (if you have one) and install it. it won't let you down like IE.
to check if you are actually online regardless of browser go to start menu..run..type in CMD, hit ok. In the black dos window that opens type in "ping www.yahoo.com" no quotes. that sends an echo off to the internet site you typed, youshould see a reply. if it does get a reply its a browser config problem probably what i wrote above