i was thinking along the lines of maby using a ftp server and putting files on it then other people picking them up..... as a way to send and recive locations of things maby. this may be a little bit slow and tedious but its my best idea.... Im not shure how to connect to a ftp server so if you know how or have a better idea please share
FTP as far as I know use TCP and is way to slow for most real-time games.
Possibly some sort of TFTP could be used if your planning to just allow network play(not recommended for online games) since it might be a easy way to use UDP.
But UDP is almost necessary for online games, TCP with all error-corrections and so on is simply to slow, tough you should be aware that UDP isn't the most reliable protocols, just the fastest.