I have found the best way to do this is to use streaming video.
Go to get streaming account . Once there, in the 'dashboard area' on the right, click on "click here to take the tour and sign up". Use the 'kall me' function in the dashboard to give me a call and ask any questions. Once you have signed up I will walk you through how to integrate into your website.
If you want to see an example of how the streaming video will work into your website, go to one of my recent website builds I did for a client:www.talk2joycee.com