Only able to connect locally not to the internet

I have a compaq presario v6000 labtop running windows vista home edition. When i check out the connection it says its connected locally and theres a X on the connection going towards the internet. Just recently it stopped connecting to the internet.I have a linksys wireless router which has two other computers running the internet off of it just fine. I have disabled the firewalls and deleted the connection and reconnected. I have tried to flush the dns, reset winsock and tcp/ip. Im not 100% i did those things correctly but there has been no change. I am out of ideas and could use some fresh ones.

Thank you

I've had experiences with Vista's "detection" of access to the internet that leave me less than impressed. Have you actually tried to access a website when this occurs?