[Plugin: NextGEN Gallery] Randomize??????????

I have two questions regarding NextGen Gallery. Right now I have it shuffling through photos as a widget on my sidebar. I want the shuffling to be random, which it is not. Also, I want to be able to click on the image to get a full-sized image. Are any of these things possible? I’ve spent far too much time trying to figure this out, but since I know little about the wordpress and most things programming, I am at a loss. Please help.