Sorry for the slow response. We have a physical connection to them. No VPN or Internet and no trusted domain. That said we are going to create some static ports, just not 1433.

My only question now, as previously stated we do not have a test cluster environment. So I'll test the configuration process on a server. When we installed two new named instances on our cluster, we created two new IPs. Everything I've read suggests it is not necessary to create an IP for new named instance on a server which already hosts a SQL Server default instance?

Why was it necessary to do this on the cluster? I've been Googling the subject, any relevant URLs would be appreciated - thanks.