CONNECT NOTEBOOK TO DIFFERENT NETWORKS

I have a notebook computer with Windows ME and a docking station. The docking station has a NIC and the notebook has a NIC. When I am docked, I want to connect my notebook to a peer-to-peer network. When I am undocked, I want to connect my notebook to a Windows NT network. I have installed windows for networking. I have different workgroup names for the peer-to-peer and the NT workgroups. I cannot establish a different workgroup for the docked and undocked profile and the NT logon screen appears both when I am docked and undocked. Can anyone help.
Thank you.