Shackleford, for what it's worth, I agree with others that learning to give presentations is an important skill. I have found it to be an extremely important skill, and it has definitely enhanced my career. I've written and given small presentations to handfulls of people, all the way up to groups of hundreds of people. And with just a few techniques and some practice, it is very manageable.I had to give one in my Texas History class a couple of semesters ago. I went up there and just read from my paper. I later found out that's apparently the cardinal sin when giving presentations! Haha.
So I'd suggest that you look at this dilema as an opportunity. It's an opportunity for you to address the current feelings that you have about giving presentations, and gain some experience in getting more comfortable in doing them. In addition to taking the 1-credit class, I'd suggest doing some learning and practicing on the side, so that when the time comes for giving the presentation, you are already more comfortable doing so. It will definitely enhance the things that you can do in your professional career.
One good resource is the Toastmasters group:
It's a good way to gain practice and learn many tips for giving public presentations. You should be able to find a group near you to check out and see if it would be practical to learn from them. Best of luck!