CC Chang , Oct 08, 2009; 11:33 p.m.
Since Nikon Transfer and Nikon View NX are free and since Nikon View NX can handle NEF files better, you should use the Transfer to transfer NEF files to your computer and they will be automatically opened in View for adjustment and conversion to JPEG or TIFF. I don't think View NX can open JPEGs that are not imported by Transfer. View NX is designed to process only Nikon NEF (RAW) files. If you just shoot JPEG and you only have iPhoto, then I would just use the tools in iPhoto for adjustments. For family pictures, iPhoto works really well.