How to rename multiple files at once?
No Program needed
select all of the files by dragging a box around them with left mouse button pressed.
and right click on any one file from which u want to start the numbering = name it, and rest will be renamed as '*File name1, 2, 3,4 *' etc.
if confusion see and learn from
my 200 KB video
Download it and watch!
additional: use ctrl and left click to select individual files