I'm not sure how you found the files, but, if you haven't already done so, I would run RegCleaner and let it identify useless DLL's. It is really good about identifying these types of files; the ones that are not shared by any other program that might need them. Also, there is a restore option that will enable you to restore any changes you made if you run into a problem. Also, it is free. I have never had a problem using it, and, it is small and not a resource hog. Their homepage is
www.jv16.org
you can get it
Here