How do I change the resolution on a Sony steadyshot dsc-s2100. Also, for some reason, the flash mode will change....and I don't know what is doing it. There are two. One of them has 4 settings (Auto, Flash on, slow-synchro and off), the other just has Auto and off....I want the 4-setting one to show. There is something that initializes one or the other...and I have no idea of what is affecting it. Also...is there a way to take off smile shutter / detection?