Cant connect

Hello,
I have a toshiba laptop.I dont have a wireless router. I use an Ethernet cable, the internet works when i go to my uncles house because he has a wirelles router. The internet hasnt worked since i used my laptop as a wirelless router for my xbox360, i think thats the problem, but i also think its not. When i have my ethernet cable in, it has the two mini computer in the right corner blinking. When i scroll over it it says inidentifed network. When i open the internet, it just says that the page cant be displayed. I really hope u guys can help me!!! I am using my parents computer now, the internet is fine.