Hello,
The address you provided above isn’t going to work as localhost creates a loopback connection, so it would be connecting us to our computers if we attempted to use it.
You can use 0.9.6.3, but it’s recommended you use 1.0.2 aka Evolution as it’s the latest version in that branch and has a lot of bug and security fixes. Evolution is just rebranding things in affect it’s 0.9.6.4.
Now, as for your issue I don’t know that I fully follow your problem. Your trying to login to the manager, but your username/password is incorrect? If that’s the case let me ask did you run the installer first? The installer will setup the database and create a login for you to use. If this login isn’t working then you will need to reset it using some of the documentation on the forums (just search reset manager password).
If your just getting started have a look at this site:
http://codingpad.maryspad.com/beginner-tutorials/
The beginners corner (third group) will help you setup the testing environment and the first set will help you get started with MODx Evolution.