We have a pc and a macbook pro. An apple airport extreme base station is connected to the broadband modem and we have a wireless network. everything worked fine. I changed the wap code to a wep code and now the pc won't find the airport extreme base station all though i can connect to the network via the macbook and the new code. I need to get the pc on the network. Using a Belkin adapter I can find the wireless network but it won't connect or find the base station in the airport utilty. I'm really stuck !
First I don't know why'd you want to change from WAP to WEP encryption? WEP isn't as strong as WAP and can be cracked in less than 60 seconds with the right software.
There's the 64bit and 128bit version of WEP. So make sure your PC is configured for the same one that your base station is configured for. If you're typing in the 'PassPhrase' you may want to type in the hex digit pairs instead. For some reason I run into the same problem when typing in PassPhrases on different devices.
Airport extreme network problem 
Linear Mode
