No setting that I know of.
I have wireless clients working just fine here. Is the machine actually connected to Wi-Fi when you are trying to log in?
yes all machines are connected to my home wireless. all machines can be ping'd and can ping the server, its just a setting somewhere.
when you setup the machine in WGM - you have to specify a MAC address, does it matter which you use? should the other one still work? this is all very confusing...