04-17-2009, 09:08 PM
Thanks to BLAZN420 for the solution. Here is a more detailed work up of solving the problems for noobies like me:
Here's how to use your Mac to share your internet connection with your AppleTv:
Make sure you're connected to the internet via something other than the AirPort card (i.e. Ethernet).
Turn on Internet Sharing:
Go to System Preferences, click on the Sharing icon, then click on the Internet tab.
Change the Share your connection from: pop-up to 'Built-in Ethernet.'
Under the To computers using section, check the AirPort box.
Click Airport options...
Enter an easy name such as nds. Leave all the security options blank -- implementing security is an exercise left to the reader -- then click OK.
Click Start in the Internet Sharing panel.
Apple TV should now see the newly created network. If it does not automatically connect to ITunes:
Close ITunes. Select Terminal program under Applications->Utilities->Terminal. Type "Ping X.X.X.X" (The "X" represents the DHCP address which can be found on the Apple TV it usually looks like 10.0.1.2.) Press return. You should see the .ms connection speed:
64 bytes from 10.0.2.2: icmp_seq=909 ttl=64 time=21.025 ms
Reopen ITunes and after a moment the Apple TV should appear in the devices menu and start synching.