do you know what kind of chip your wlan device uses? (e.g. ralink, net gear prism2, etc) manufacturer or brand don't usually matter based on my experience, wireless can be a biatch to set up. I still have yet to connected to my wpa protected wlan (under linux) using a usb dongle with a rt2870 chip although I think I'm close. [edit]if your router is set to allow TKIP or AES encryptions, then it shouldn't matter which one you specify under networkmanager