I need some help in configuring my DNS and Active Directory to compensate for the fact that my DNS Server is provided through my ISP. What prompted this error is when trying to install Exchange 2000 I was getting the error that setup could not contact the 2000 Active Directory. I was told that if I was using an external DNS Server provided by my ISP that some changes needed to be made. Can any one give me some advice on how to do this?