Hi.... I have set up my home network where the WRT54GS is placed on the first floor of the house in the corridor, and 2 PC's in seperate rooms are connected to it via the WMP54GS PCI cards. While connection is established, the signal is Low to Very Low, and only sometimes Good. The problem I feel is the thickness of the walls (2+ feet) as it is a very old house. My own 2 PC's are on the ground floor in a room with walls of the same thickness. The connection here is established but signal shows No Signal, also using WMP54GS. The router is currently with the stock 2.09.1 firmware installed, just the way it came out of the box I didnt want to be too hasty with the firmware upgrade. I thought of replacing the WMP54GS in the computer downstairs with the USB 2.0 version and place THAT outside the room on the wall. Would that help? The other option I am considering is to replace antenna's on both the router and PCI cards with those with a higher gain. Is that logical? I am open to all options, if anyone could suggest anything at all. I really need to make this work. Distance is not the issue, as none of the PC's is more than 30 ft. from the router. So the only logical reason for the problem appears to be the thickness of the walls. Thanks.