Defining the Value of IT IN BUSINESS
MIS is about applying information technology to business problems. The emphasis is on finding solutions. To the MIS professional, information technology is a tool, not an end in itself.
Computer science focuses more on technology and less on its use in business. MIS looks less at technology, and more at how it is used.
MIS and computer science courses differ, of course, but so do the support courses. Computer science students take courses that will help them better understand technology, like math classes. MIS students take courses that will help them understand business problems, like accounting and marketing.
Neither one is better than the other - they're just different. If you are really into computers themselves (for example, if your garage is full of circuit boards and ribbon cables), maybe computer science would be for you. If you're more interested in working with people to solve problems, consider MIS. Choose the one that fits you best.
Georgia College has a fine computer science program, by the way.