I've had my D90 for about eight months and am slowly getting more comfortable with it. I finally made a serious attempt at shooting for an evening in RAW. However, PS Elements 7 can't seem to open the files. I have tried the "all format" option and several others--including the NEF file type option--and keep getting a message stating that PSE7 cannot open the file because it is the "wrong type of file." I'm really new to PS and somewhat of a technological dunce, so I imagine I am making a rookie mistake.