When you make a VPN connection to a Windows 2000 Server, Win9x clients may be disconnected with:

Error 650 The computer you're dialing into does not respond to a network request. Check your server type setting in the properties of the connection.

Win9x clients require that the external (Internet) adapter on the server be first in the binding order.

See tip 2743 ยป How do I change the Binding Order in Windows 2000?