Changing multiple file names in a Windows Explorer folder

I have a folder with maybe a couple of thousand files whose names all have certain characters I want to replace or delete (ie. for all files in this folder).

Is there any way to edit these changes for all the files in single commands instead of doing renames foe each, one at a time.

I think I could find a way to do pattern-match changes a VB.Net or C#.Net, but is there an easier way to do it in Explorer?

Thanks