ConfigReader::Simple is nice.

# you can include comments
ftp1_param foobar
ftp1_root  /local/foobar
ftp1_string "this is foobar"
# 
ftp2_param foobar
ftp2_root  /local/foobar
ftp2_string "this is foobar"
[download]

You can even use multiple files, one for program settings and one for user settings, so they have less chance of screwing something up, or in your case you could create a separate file for each ftp.