An application program is provided access to a third party legacy data list not supported by the application program. A method embodiment includes supplying a plug-in module capable of providing an interface between the application program and the third party legacy data list. The application program sends a function call to the plug-in module. The plug-in module, in response to the function call, accesses the third party legacy data list and provides the application program information relating to the third party legacy data list.