As far as I know, They don't support a non NetBios network for agents. That's been a feature long wanted for.
I think TeamTest does support TCP/IP though. I also think some people have attempted to create their own TCP/IP based agent technology. I know that we had a wack at it at what used to be Borland many years ago.
The Talk* functions require NetBIOS as the network protocol, like TCP/IP leverages WinSock 2.0 standards. Doesn't preclude other protocols. But it must exist on the systems on which the test scripts that contain those functions operate.
Sr. QA Group Lead
Intellocity USA, Inc.