Hi all, me, again. A friend has asked if I will be willing to go take some shots of her tonight ( who knows why) I've told her 'sure, i'll see what i can do'. Now, having never done anything like this before, any advice? Also, having a play with my 20D i noticed if i use the Portrait preset, I can only shoot JPEG, what if I want RAW? I assume I have to use manual but that could get messy 
A lot of people prefer available light for portraits so I'm sure you managed ok.