Check here Link Removed make sure you are using the most current drivers.
They have an Intel 1000 and and Intel 6200 for your ASUS g73jh so make sure you get the correct one. It may be an even better idea to look at Intel and see if they have one that is even more recent. Check your router manufacturer and see if they have a firmware update for your router.
Type ipconfig /all at a command and post the results back in your next post. Also from a command prompt use the ping command, ping other network nodes by ipaddress, ping the inside edge of the router, ping an outside address 64.233.169.99 post back the results.