Question : How does one configure SPN for an ISA 2006 and NLB Exchange 2007 CAS-setup.

When using an ISA 2006-server in combination with a NLB Exchange 2007 CAS-setup, how does one configure SPN (needed for pre-authenticating NTLM with Outlook Anywhere)?

Answer : How does one configure SPN for an ISA 2006 and NLB Exchange 2007 CAS-setup.

http://technet.microsoft.com/en-us/library/cc736453(WS.10).aspx

Getting closer.  I am surprised actually that this is such an unknown process.  Great question!