Any distro would be suitable for this. Most of them come with a choice of FTP servers. ProFTPd and vsftpd are popular choices.
As you asked on the forum, that is where I replied, to leave the thread publically accessible. If you register an account on this site, you'll get an email whenever anyone responds to your posts.
"Insanity: doing the same thing over and over again and expecting different results." (Albert Einstein)