I have a 2 node 2008 R2 NLB, and am experiencing the same issue as here - http://social.technet.microsoft.com/Forums/en-US/winserverhyperv/thread/47a53a8b-d0dd-4d4d-aa97-a3f04990fa53 (didn't resurrect this thread because it was in the HyperV group). So the short of this is, how do I get the NLB VIP to be available in the bindings options of IIS7.5?

Thanks, the odd thing is that I can type ANY IP address I want in there and it doesn't complain. Even if it is not bound to the server.