I have a WRT54G in an appartment. Right now it is open access. I would like to leave it open, but disallow all outsiders from accesing my families computers on the network. I see AP isolation would isolate all wireless clients, which is good. But I still need to have open communication between my computers on the network, for printer sharing and such. I have one wired and two wireless computers of my own on the network. Thank you!