I am a rank amateur at photography and I am hoping that someone could answer some basic questions for me. I bought a (cheap?) ViviCam 7022 to take photos in an upcoming trip. First question: I want to take between 300 and 400 photos at a "normal" image resolution. I presently have a 2GB memory card in my camera. Is that enough memory, or do I need more? What if I increase the image resolution to a higher level. How much memory would I need then? Second question: I want to take some pictures from a moving train through glass windows. There is apparently no way to change the lens speed on the camera. Any suggestions for trying to get the best pictures possible? Thanx in advance.