1-abc.net File Renamer will let you see that such renaming tasks can be much easier or even fun. Just add as many files as you want to a file list, then change the file positions if required and define how file names should look like. You can decide by your own if the new file names include today's date and time, file creation date and time, numbers, the original file name, customized text or what ever you think. A preview feature allows you to see the final file names as they will be after renaming.
What's new in this version:
Version 4.0 includes several sorting options, a backup feature to reverse your renaming work if necessary, sequential number renaming and new date and time formats.