Set up a file naming preset and use it. See these threads for a good discussion:
Message was edited by: Kirby Krieger
Does your answer (and the threads mentioned) apply to new imports in the future only, or also to past imports which naming scheme I want to alter?
As for now, I am still puzzled by the terminology 'Version Name' / 'File Name' used in Metadata's "File Info" drop down menu. Basically my naming preference would be: year, month, day, cameras (actually: Nikon D80, Nikon E5700, Canon Ixus 970 IS), original file number (respectively: DSC, DSCN, IMG).
Does I understand your "set up a file naming preset" advise correctly as in taking the following steps in chronological order: Import Settings > Rename Files > Version Name (and check or uncheck 'Rename Master File'?) > either 'Edit' (dropdown menu) or either one of the other 'Version Name' alternatives?