Just click <<Menu>> click <<Enter address>> write <<about:config>> in the address bar" then go to config page.It will open a page named "power-user settings" go to the below of the "power-user settings" you will see option named [use bitmap fonts for complex scripts] =check [yes] for use bitmap fonts for complex scripts " Now <<Save>> the settings.THATS ALL...NOW VISIT ANY BANGLA UNICODE WEBSITE AND SEE THE BANGLA LANGUAGE