The second one was kind of a disaster - it was a practice trial - I felt bad, because it was a group exercise, but it also felt like more of a learning environment, so it was okay. It was a small group with a good sense of humor, and it was almost more like a theater class than a law class.
I froze up a couple of times during the 10-minute speech as well, but afterwards, during the part where I took questions from the class - I was actually pretty relaxed - because I realized I was informed enough to answer questions, and that I actually had more than 10 minutes worth of information. I have a couple of options, either I can attempt to put myself in an area where I don't have to encounter this type of situation, or, as Nakamova says, I can just speak more often and it will get to the point where I am comfortable enough with it that I won't be crippled when the need arises.
I will look into Creative Visualization, too - I think I have heard of Shakti Gawain. I think if I encounter this kind of situation again, I need to realize that setting aside the time to calmly place one's self in the situation before it happens is a valuable use of time.
You guys are great, I think I will bookmark this thread, I sense that I may want to refer back to it again.