Limited or no connectivity

I have a 2wire hg2700 wireless router and it is connected to my Desktop PC via ethernet. I am able to browse the web, download etc on my desktop.
I also have a wireless capable laptop which I can connect to the router with but it wont go online. I have entered http://192.168.1.0 into the browser (and a few variations) but it keeps saying page not displayed. I have gone into the router settings on my desktop but it has made no difference. Can anyone help me?

Did you make sure your laptop has an working IP? Maybe your router does not have DHCP running and your desktop has a static ip. try and browse to http://192.168.1.0 on your desktop and make sure DHCP is running.