As to the SSMS, do you have a version previous to v9. The version where AC support has to install it, would have an sa username and password specific to that practice. So, you would have to hack it.
Practices have to request and sign a release document 9.1and later, but they will then get a password that they can use SSMS, along with the standard warning that if "You Break It You Buy It".
These days this is standard practice for us.
