I guess the point I get lost isWAS when you say 'DTMF dialing (or similar)'. I found it in the pulldown menu for the native Internet Call application. Internet Call -> DTMF dialling (below Dialing pad). It's disabled at the moment, presumably since I'm not connected to an active connection.

The downside is I need to launch all this when the call comes in. Gizmo already seems to be a ring behind my cell phones.

The OS2008 discusion says that voice confirmation should be available soon. Yeah Google!