[GreyingJay]

Thanks everyone! I successfully got it working tonight. (Fun story - the robot is in the trunk of my car in preparation for a demo tomorrow, so rather than haul it into the house, I worked from the back seat. In the dark. In a snowstorm...)

I followed the advice of everyone in the thread and made sure to disable the wireless adapter on my laptop - actually right click in Windows and hit Disable, not just flip the switch on my laptop - and disconnected anything else from the radio Ethernet ports. This time it seemed to work and I can connect wirelessly again.