Hi, I have a white plastic macbook which appears not to be able to connect to my wireless network. All the other PCs and a Mac Mini in the house connect fine, but the macbook does not. It has connected since i got it, both to the home network and a network in school, but today it promted me for the wireless password, connected a few times but did not give me a IP address, and now will not connect at all! The network appears in the list, i click on it, enter the wireless password, then it says connecting before connection failed. The network setup is a Cisco router connected to the modem and then connected to the wireless too. There are no computers connected via cable to the network. Any ideas? This is driving me crazy! Thanks.