Firstly, I must say that PCLinuxOS is the only distro which detects my wifi connection without Ndiswrapper, but natively. HURRAH!
But, I have a problem. When I write my wep key and try to connect to internet, a message appears: "Connection failed". After that I don't need more to write the wep key, but it doesn't want to connect. So, the problem is not with the key.
Do I need any file or something? My USB wifi is a Conceptronic n150ru.