Hi ive just setup my wireless internet with a 2wire router and a tp-link usb adapter all was working fine till i changed the encrption from wep to wpa. I logged onto the config page ticked the box to enable wpa then clicked the save button and then it disconnected me and now when i try to log in it brings up the box for putting in my password but it now asks for the wpa password not the wep one but it never gave me a password when i changed it over so i cant access the net.Ive tried resetting the router but to no avail any help appreciated as im a newbie at this.