This following article may help: http://www.answers.com/topic/keyboard-layout

ANd how Can I Make Default Text Direction as RTL  And justify???

Handling right to left text.

Step 1:  Type in the required Urdu, Arabic and Hebrew text.

Step 2:   Select the text using the mouse and invoke and right click.

Step 3:   In the context menu, choose the Tags option and pick your tag you want to edit. Then choose the properties.

Step 4:   In the properties dialog, click the style buider tab.

Step 4:   Click the Text tab in the left menu. and choose the "right to left" in the text direction dropdown.