lawrie, my cordless phone is 2.4ghz and it's crystal clear in the gazebo. that's very encouraging. i have 2 cinder block walls and 1 glass wall between my desktop wifi source and the gazebo. so, what, exactly, do i need? i have 2 usb ports and 1 memory card slot on my dynavox. i prefer to use the card slot and reserve the usb ports, if possible.