The wap11 s4 has downfalls with mac address filtering and really shouldnt be concidered.

on the other hand if you want ot hack you wap11 s4 to become a wap11 then you could do that with some software

you could upgrade the output to 100mw instead of the 30mw standard.. you could enable the MAC address filtering and and use it...

http://www.seattlewireless.net/index.cgi/Wap11Hack go here to get your fingers in deep if you wish too