I might be asked to shoot a college reading of the Vagina Monologues that my girl friend reguarly reads a part in each year. I know the lights will only be on the readers and not much else in the room they have (its like a lecture room with a balcony. So, I have a Rebel Xt now. No flash, please suggest one (I was thinking 430ex Canon), and technique to gather good shoots (where to bounce, things like that, difffuser maybe and shoot straight on?). Thank you for the help.