When you copy files and there is already a file of the same name in the folder Windows will kindly ask you what to do with it. If you choose to keep both files it will add a (2) or (3) to the end of the filename of the file being copied in.
After a large copy it can be very difficult to find these potential duplicates because the Windows 7 search is poor. Finding parenthesis is a real pain in the neck.
After some searching I was able to find the answer I was looking for here: http://social.answers.microsoft.com/Forums/…
Quite simply use the following in the search field:
I plan to elaborate as to what the means to windows, but clearly windows needs more than just quotes to make a literal string.