The bfdl.zip file you have requested: Tools / Utilities / BF2 Auto Map Downloader Client - 117.12kb is not available. Perhaps try browsing all files for the game Battlefield 2 and upload any files you want to share or are missing. This is the only information we could locate:
BFDL is a program that will automaticly download the custom map that a server is running and then automaticly launch the game and connect to the server. The program is very simple to use, works with punkbuster and does not make the loadingtimes longer if you already have the map. As a server-admin all you need is the BFDL-server and a http- or ftp- server where the maps are hosted.