File Replication Service Warning

I have an issue concerning the FRS. I have a W2K network with 1 DC. At one point in time I configured and installed a 2nd DC for the same domain but demoted the machine, changed the name of the Computer and left it running as member server. Now I am faced with an issue in the FRS. In the site replication which I had set up for both DC’s, I cannot remove the computer named Apollo (former DC, renamed to mercury and demoted to member server). The configuration kept the name apollo) How can I get that information off the DC and AD?