Right now, your default gateway is 192.168.1.1. Ping that. Do you get a response? If so, enter that address into your browser. Did your router confuguration page open? If not, run a traceroute to an outside web server, something like google.com
tracert google.com
Your router's IP will be shown in that list. It will likely be the first hop. Try entering each address shown into your browser until its configuration page opens.
If still no luck, move onto JohnWill's advice.
After configuring your computer to obtain an IP address automatically (use DHCP) and it actually obtains an address, the address of your router will be your computer's default gateway address.
(Hope that wasn't too confusing!

)
Enter that address into your browser.
Of course, this will not work if your router is not providing DHCP. If not, we will try something else.