If you don't know how to set the .bxl file association, check the FAQ. Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.
Social work licensure and certification, including specialty certification, must be maintained by completing continuing education courses. Requirements for the number of hours and the types of courses that can be taken vary for each state.
For example, to become a teacher you will need a Bachelor of Education (B.Ed) or Post Graduate Certificate in Education (PGCE), and to become a social worker you will need a Diploma in Social Work (DipSW). If you are interested in related career opportunities you should speak to your local careers service. Useful Contacts and Further Information