Wi-Fi no longer connecting to the internet I keep getting this message:

"Wi-Fi has the self-assigned IP address 169.254.10.243 and will not be able to connect to the Internet."

I was connected and my Wii and iPhone were using Wi-fi through my Airport card. I tried to set up a new network, but it won't connect with it.

How do I get rid of the self-assigned IP address?  I have rebooted everything. I also dumped files from the library that a help group told me to do:


Go to /Library/Preferences/SystemConﬁguration 
Delete the following: 

com.apple.airport.prefrences.plist 
NetworkInterfaces.plist 
Preferences.plist 

Shut down computer 
reset PRAM


I changed the channel to a lower number. Any suggestions? I have an iMac.
It sounds like you were sharing your ethernet internet connection with your Wii and iPhone via your internal Airport card. The wireless strength indicator in the Menubar on your Mac should have a little arrow pointing up if this is your situation. Check System Preferences/Sharing/Internet and make sure you are still setup to share your ethernet connection via Airport. Also make sure you ethernet cable is still plugged in.