Use these instructions to set up OggChat for iChat on your Mac.
1. Start iChat or Messages on your Mac
2. Select Preferences...
3. Choose the Accounts tab (the second tab) on the window
4. Click the + button in the lower left-hand corner to create a new account.
5. Select Account Type Google
6. Enter your Google email address and password. Hosted accounts work as well.
7. Click Done
8. Go to your Messages or iChat Window and select Available as your Status.
If you've already accepted friend requests from chat1, chat2, and chat3 for this Gmail account, you are ready to start accepting OggChat chats.