If the IP address is not correct, you may want to check your DHCP settings on the router. If its not assigning the addresses correctly there may be an issue.
Also, does this wireless router have any kind of draft-N on it? I've experienced with several different wireless-draft-N enabled routers that some computers and most windows mobile devices cannot connect to them. (Yes, even when running in mixed mode and also when running in only B and G. With no N enabled, they still cannot connect correctly.)
Try typing in the IP address of the website instead of the DNS name. It may be a name resolution issue. From your computer ping say www.google.com and then enter the IP address that it resolves into the browser on your device.
Current Device - HTC Touch Pro
- Ask me about this device