I logged into the router and the only thing I could see related to Wireless was this "bridge mode" setting. Should this be turned on ? Otherwise, the security was set to low....and there were no port settings AFAIK.
I upgraded to IB Gateway version 475...and it worked....sort-of. The GUI was still all messed-up with the screen extending beyond my monitor's boundaries....but it did process the transactions.
Wierd, very wierd.
I must contact IB Tech support on this tomorrow.