Configure ScreenSteps and Export To Blog
Now that you have installed and configured the Movable Type plugin you can configure ScreenSteps.
Create Web Export Account
In the Preferences > Web Export pane create a new account using the Movable Type type (1).
For the server you should use the url to your joomla installation followed by /xmlrpc/index.php (2).
http://www.my-joomla-server.com/xmlrpc/index.php
For the user name and password use an account that has permission to publish content on Joomla (3).
You guys ROCK!!!!!
I have been wanting Joomla integration for some time and was about to develop a component myself. I received an error the first couple times uploading, but it finally worked.
Rock Solid! Thanks for researching this and getting it to work!