HI, sorry if this is basic, but had a system setup last year by a company, which worked great with a TSU9600 connecting to Dlink wirless router, connected to extender 9400 controlling devices. Had to change to a new wireless access point from BT which and it no longer works. Network and BT adsl see the extender ok, but the TSU9600 will not connect. When I plug dlink back in it works, so I think it may be to do with encryption on BT hub not allowing the TSU to connect to it wirelessly, the dlink had no security set.. can anyone help a beginner work this one out