Sublime text 2 - find file by class name in Zend Framework

Sublime text 2 - find file by class name in Zend Framework

When you press Ctrl+p Sublime will open popup when you can easily find the
file. Sublime auto detect the file location in both situation when you
press / or space between file path parts.
In Zend Framework all classes has name within follow template:
Namespace_Module_Other_Part_Of_Class_Location, how can I make Sublime
understand the _ as a path separator when I press Ctrl+p and copy past the
class name there?
So the above class should be recognized on location:
Project/Namespace/Module/Other/Part/Of/Class/Location.php