For users unfortunate enough to need FinePix Viewer to download pictures off of godawful non-USB-mass-storage Fujifilm cameras on older OS's:

The switch to invoke the 'download pictures' function (for which there is no goddamn button in the program!) is "/w 0001". E.g. you can make a shortcut for "Download pictures" with this command line:

"C:\Program Files\FinePixViewer\FinePixViewer.exe" /w 0001