Battlefield 1942 Mods, Modding Tutorials & Forums

My question for the server hosting gurus out there (freddy ): is it possible to have certain server announcements run only in selected maps? I have a map where the gravity is slightly modified, and I'd like people that join a server hosting the map to know.

There is a thread about that somewhere, there was no means to get the messages to repeat in certain timeframes, it just printed it all at once at map start.