How can I move my IIS server to another machine?

In a recent test, using the IISSYNC.EXE utility to send configuration information from one server to another where neither were members of a cluster resulted in fatal application errors on starting the IIS MMC snap-in. The two servers, both NT4 SP5, where members of different domains on the same subnet. The failure was catastrophic, and required removal and re-installation of the NT4 Option Pack to recover.

A subsequent search of the Microsoft website came up with a great reference to the IIS Export Utility (www.adsonline.co.uk/iisexport) which was able to export and import the websites directly from one machine to the other. Manual moving of the SSL certificate was required. I'm in the process of writing a white paper on the best practices of using this utility to replace servers.

I've used this utility and it works beautifully. However, I was wondering if it was possible to run this utility using a servers IP Address instead of netbios name. I have a server at my disaster recovery site. Our Firewall group does not allow nwtbios to the servers at this site. Any advise?