I bought a linksys that is not wireless. I already had an airport, and so the feature was not worth anything to me.

However my iBook finds it. But I can't use it because it is password protected and I don't know the password.

Unfortunately the linksys comes up before the airport in the iBook, and the standard iBook wizard to configure your wireless couldn't be told to ignore it. Oh, there was a dropdown for it, but no matter what you put there, the next step went to the first in the list. :-(

I eventually found a more manual way to configure the network, and it isn't a problem now. But it was irritating at the time when I couldn't configure the laptop because I could not get it talking to the airport, and failing that could not get it accepted by the linksys...

Cheers,
Ben