I have a cable account with Rogers. And I have my own IP address and Internet domain name. Now I install my NT as a standalone server. Not a PDC, and can connect my PC to the ROGERs home domain.

Now I want to install an EXchange server on my PC, but you know Exchange can only be installed on a PDC. If I install my PC as a PDC, I can not connect it to the rogers network. How can I do it it?
many thanks!