I bought a wireless dlink router wbr-1310. I've had it hardwired to my dell desktop, and wirelessly connected to my macbook. Now I want to have the dell desktop wireless as well (solving the cord across the living problem). When both computers are wirelessly connected to the router, everything works for a little while. Then the router seems to lock up and I have to unplug it and start it back up. Any ideas on why this new setup isn't working?