You will NOT be able to copy the files to a local directory. The FTP adapter does not have the capability to handle an ftp data port and save the data stream to a local directory.
Your best bet is to use the normal FTP adapter functionality to copy the files and use an archiving pipeline component to save the files locally.
[url]http://codebetter.com/blogs/jeff.lynch/archive/2006/04/08/142537.aspx[/url]