To add a custom dictionary to the list:

1. Press the Dictionaries button on the Options Tab.
2. In the Custom Dictionaries window that appears, press the Add button
3. In the Select Custom Dictionary window that appears, locate the custom dictionary that you want to add. Dictionary files should have either a .DIC or .VTC extension. View Select Custom Dictionary window.
4. Press the Open button. This adds the custom dictionary to the list on the Custom Dictionary tab.