Windows 7: Ad hoc problem between windows xp(host) and win 7(client)

Hi,i am having problems to share my internet beetwen a win xp computer(host) and a win 7 loptop(client) i did everything right and to test that i did everything right i tested the wireless on my iphone and it worked fine.I just wana know what i need to do to have acces internet on my win 7 loptop from the internet that is shared by a win xp computer.I use an usb wifi card.My problem its not connecting i can connect without porblems but when i go to browser and try to go to link it doesnt work!I doesnt have acces to the internetPlease Help me!