Basu,
Oh, you're not bothering me! It's great to see that you're so interested in learning more about the academic opportunities available to Lafayette students.
As you're well aware, Lafayette does extend a few course offerings to all those interested over the Interim in January as well as over the summer.
In response to your questions, there is an additional fee for enrolling in one of these "extra" courses (about $1,750 for the course and about $225 to reside on campus). Credit earned from these courses can definitely count toward a major. To enroll, you must have completed at least one semester of college-level work. You may only enroll in one Interim/summer course during any given period. A slightly outdated (yet still informative) webpage contains useful information on the topic:
http://www.lafayette.edu/academics/i...campus_05.html.
Also be aware that Lafayette offers study abroad programs during both the Interim and summer periods. For more information on our "Interim Abroad" programs, please check out:
http://www.lafayette.edu/academics/i...abroad_07.html.
- Justin