Starting a Audio Confrence

We can do the conference using yahoo. Voice conference.
To start a voice conference:

1. Click the "Actions" menu in Yahoo! Messenger and select the "Invite to Conference" option.
2. Select friends or groups from the list and click the "Add" button.
3. Include an optional message.
4. Check the "Enable Voice Chat for this conference" option to enable the voice feature.
5. Finally, click the "Invite" button to start the conference.

Please Note: If you forgot to enable voice before launching the Conference, click the "Voice" icon on the toolbar.