its not only this gadget , i cannot use internet on any wifi device !
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If you are sharing communal LAN (say, like on campus) you may not be permitted to add a wireless router to the system -- but that would be the simplest way to permit access to internet wireless for wireless equipped devices (like the iPad). You need to talk to a knowledgeable retailer and explain your setup. If on campus first speak to system administrator.
Trying to use the PC as a wireless access point might be feasible but I don't know how.