May be this can Help.
Jack (MVP-Networking).

"Steve" <highbridgesb@yahoo.co.uk.(nospam)> wrote in message
> Laptop, XP Pro, internal wireless adapter. Connects OK - will access eg.
> Yahoo Messenger, can look at other PC going through the same router -
> BUT -
> will not go to any URL I type in - gives me page not found or suchlike.
> However, it is connected and must get outside the router here to use Yahoo
> Messenger but IE, Firefox and so on, get nowhere. Any thoughts please?
> --
> Puzzled person