We encourage students in Computer Science to study abroad.
You may wish to take computer science courses while abroad, but you need not. If you want the course to count for your major, you will need to gather as much information as possible about the course - at minimum a description and preferably a syllabus. Once you have the material, send it to the chair with a note explaining your request. (E-mail is fine.) This should be done before you take the course.