Thanks for responding.
I stopped the SIA. Then "Right-click on the SIA and select Properties->Configuration-> and click on the CMS DB specify option." This action didn't show any obvious errors. It gave a popup titled "CMS Database Setup" with 3 options. Update data source; Copy data from another source and Recreate current data source. So I assume that this was expected and just canceled the window.
I haven't successfully logged into the CMC so I haven't had the chance to create users from within it. This is a brand new install.
I'm logged in as Administrator - shouldn't I be able to login to the CMC as Administrator?
Also shouldn't there be a CMS process running under the task manager?