Actiontec GT704WG doesnt connect to internet

HI! all your computer is connected except for one, you are connected to to the local network but cant get an internet connection, I dont see any problem with your wireless connection bcoz you are connected to the lan, check the security settings of your browser on your windows vista, go to internet option and security, lower it down to medium security, so that you can access the internet or try using other browser like firefox or google chrome.. check your firewall settings as well on your windows vista..