Technophobia

I am going to try and show Through the Red Gate to my class this afternoon. But, I am worried about the technical aspects of getting all the equipment to work. Last semester I had a TA take care of all of this for me. This time it looks like I am going to have to find a student to assist me with this task. I have enough to talk about if I can not get the movie to work. But, it never looks good to fail in front of an audience.