If you have a Mac computer, you may be able to use your Apple earbuds with mic. If you have a Mac computer with one integrated audio in/out port, the Apple earbuds will work. If you have two separate audio ports, Apple earbuds will NOT work.
Sometimes Apple earbuds will work with other computers that have one integrated audio in/out port, and sometimes they won't -- it depends on the computer. You can test your mic in the student test room by running the Audio Setup Wizard: http://columbia.adobeconnect.com/student_test/