I have installed ArcInfo 9.3.1 on a windows 2008 R2 server and added a GIS Server connection to arcgisonline.com premiumtasks to do nightly batch geocoding. I use the service connection in a python scirpt to the geocoding and additional tasks. It works fine in development on a window 2003server but fails on our production server which is windows 2008 R2 OS. Even attempting to run the geocoding tool manually fails. The error I get is that the parameters are invalid. We believe the error is related to some windows 2008 R2 setting, perhaps IIS or firewall.