avoiding college classes

I am just starting to address my problem of public speaking. I am a senior in college and have always dropped classes that require oral presentations. My major ironically is communications, emphasis on advertising, and I am ready to face and conquer this fear before I go crazy. Now that I am a senior there is no way to avoid classes that I have to present advertising campaigns on a regular basis. I have to give a brief speech this Monday that is in front of the class and I am terrified. I was trying to figure out how to arrange my schedule to avoid taking this class semester, but now I am going to stick with it and face this crazy fear. I do not know who is going to read this but if anybody has any information or advice, I would greatly appriciate it. I have heard that I should think of something to make me angry, because that blocks the adrenaline from flowing or something like that. Oh well, I am willing to try anything at this point.