Delete files in foder and sub folders ending in COPY ?

Try using a duplicate file finder.

Both of these will get the job done.

http://download.cnet.com/Auslogics-Duplicate-File-Finder/3000-2248_4-10964299.html
http://download.cnet.com/Duplicate-Cleaner/3000-2248_4-11309622.html

Here is an article on both of these programs:

http://news.cnet.com/8301-13880_3-20004865-68/free-programs-find-and-remove-duplicate-files/

I have had good luck with the duplicate cleaner, as mentioned by activematx. It is a good application and it is free. It takes little space on the hard drive and uses little system resources.

I was rather looking for a script which deleted files with the word COPY in the filename .

Thanks for the warnings - its just that the duplicate file finder method can be tedious - the files in question are all images and will not have the word 'copy' in them normally - they are usually just the names assigned to images by the camera eg IMG08252.CR2.

Its just that in many cases there are copies produced due to windows seemingly wanting to create copies of files for no apparent reason when the user tries to select multiple files with the CTRL key held down.

Thank you KCTS

I know the scenario only too well, and I'm sure it has happened to us all at one time.  You have a folder open in Windows Explorer and are in the process of selecting multiple files with the Ctrl + Click method, but as you click on the next one you accidentally drag the mouse just as you click (left part of screenshot) and it drags all selected files.  This then creates copies of as many files as you had selected, with the names of the new files all prepended by "Copy of " (right part of screenshot).
That being the case, unless the behaviour differs between Windows versions, surely your file search will have to be for the prepended "copy of" in the file names:
"Copy of *.*"    or    "Copy of *.cr2"
and not the word "copy" appended to the file names:
 "*copy.*"     or    "*copy.cr2"