Using multiple version control providers with Navigator (MS VSS and PVCS) (4273350)

I have 2 version control providers installed on my local PC (MS VSS and PVCS), SQL Navigator does not pick up the first installation of my version control provider. For example I installed MS VSS and configured Team Coding in SQL Navigator and everything worked ok. I then installed PVCS and again configured SQL Navigator to use the the PVCS version control. But when I try to reconfigure SQL Navigator to use MS VSS it picks up the PVCS is installed and tries to login to the PVCS repository.