Ive got an odd problem with my two-week old MacBook Pro and its connection to my wireless network. Ive done what I think is pretty exhaustive troubleshooting, but remain baffled. Heres the story. This morning I connected to my wireless network (DSL 2WIRE modem/router) with no problem. This afternoon I returned and Airport refused to connect, giving me the error message, Airport is unable to connect to the wireless network The network shows up as being available, but when I attempt to connect, it wont. (I didnt make any changes or install any programs this morning). Heres what Ive done:  Restarted the router  Repaired permissions  Deleted the networks entry in Keychain Access  Re-entered my WEP code (assuring it is in correctly; Ive tried both with the $ and without)  Used interface robustness and without.  Attempted to join the network from the System Preferences>Network.Airport route.  Created a new account and tried connecting. Other tidbits of information:  Another MacBook in the house connects to the network with no problem.  My MacBook can connect to another (unsecured) network that I can see in my house. So, it would seem my Airport card is working okay. Any ideas??