Database settings for Model

[eluser]Webjema[/eluser]
As you know the Model can has different DB connections and hence other DB settings for these connections.
I need another DB connection for one of my Models. And I want to keep DB settings together in database.php
How can I send DB settings from database.php to Model?

I looked through database classes and found that database.php is being used once and data from that file is not being saved.
I suggest only one method - to include database.php before creating Model.
Do you have any other ideas?