I have OS X Leopard 10.5.8 on my Toshiba A205-S5804, and i'm using the Realtek RTL8187B wireless card. Apparently when i try to install the kext I need to make my wireless work, the kext turns into a folder and gets a new extension know as .kext.bak after installing once. So now on Snow Leopard iatkos s3 i cant get wireless, and everything else on the computer works fine. my wireless card isn't airport compatible so mac thinks its a ethernet adaptor. either way it works fine for me. but on snow it does work at all. please tell me what to do.