Comcast installed a new wireless telephone modem when my old modem went belly up. My office is in the south west basement room and I can't get wireless coverage for my ipad on the main floor bedroom which is in the north east corner of the house.

Is is possible to install another wireless router upstairs so I can use my iPad upstairs? One that operates on the same frequency(maybe that's a dumb question) I know nothing about networks and am very new to wireless.

Thanks