I'm currently using oovoo for embedding video chat at a RapidWeaver site www.meridianrescue.co.uk.
I would prefer a more stable / customisable process such as Tokbox rather than relying on oovoo.
The chat page needs to be password protected. Preferably with 2 passwords, 1 for admin and 1 for client.
The clients password will need to be changed each session either through the CMS (webyep / TinyMCE), or through alternative such as MySQL.
And a text chat function will be necessary in order to text any instructions to struggling clients.