Installing Pro

I have a Centos 4.3 Server with Webmin and virtualMin GPL installed but have not setup any domains as of yet. I would like to install the Pro and would like to know if I need to uninstall webmin and virtualmin first. Webmin 1290 was installed from a rpm from and the virtualmin 3.190.gpl, was a wbm .

Thanks Bill

Thanks Joe for your help through customer issues. I have done as you prescribed and removed just the webmin rpm as all else was installed through yum or Centos CD with no 3rd party repositories.