Question: Which is better for a college student ... a DOS/Windows-based computer or an MAC/Apple-based one? Also, Desktop ... or laptop?

Thanks for your time and attention, sir.

The Dean, who is actually not a "sir" and who came of age when the Slinky was considered to be a technological marvel, is the wrong person to ask about all things electronic. ;-) However, there is an entire College Confidential forum dedicated to this issue. See http://talk.collegeconfidential.com/college-computers/

This one thread in particular, Choosing a computer for college? Look no further! seems to cover exactly what you need to know.

Hope that helps. Happy hunting!