Can't connect wiressley to internet on my laptop at home but CAN connect at PANERA BREAD? wuts up with that?

OK well i got a laptop. When i use it wirelesley at home , it says conencted and signal is good but when i open internet explorer it says page can not be displayed but when i go to panera bread it says connected and ii'am able to go on internet explorer and surf the web ....so what does that mean? Does that... show more OK well i got a laptop. When i use it wirelesley at home , it says conencted and signal is good but when i open internet explorer it says page can not be displayed but when i go to panera bread it says connected and ii'am able to go on internet explorer and surf the web ....so what does that mean? Does that mean i need like a router or something or what? Will give you 5 points whoever answers this correctly?
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