Since Google Translate does not have full support for this language, you will need to use additional translation services available on the web, but in order to use this you also need to have Myanmar fonts installed on your computer because if you translate something without the fonts installed, you will only see empty squares instead of the characters.
To install a font, download it to a location of choice then go to Start > Run > fonts. Wait for folder to appear then drag the Myanmar font into the Fonts folder.