How To Automatically Copy A File

Is possible to add, a file to the solution explorer, and setup, at compilation time, the file to be automatically copied to the output directory. I wish to copy it to a subdirectory, but it looks like there is not an option other than the output directory. I cannot embed the files as a resource, because the user should be capable of modify or replace them. There are other options, as content files, but I cannot find how to manage them, or if they are useful for this purpose.