cartograph

http://www.minecraftforum.net/viewtopic.php?f=25&t=13134

dl the program.

then what u want to do is copy the server's world over into one of ur personal world save (the single player one)

then try to map it. red= fire or lava i think

*moved to help center

I love this program it is very easy to use and very detailed. I've used it in mapping some of my single player maps.

I also know there are a few other programs that do the same as well but can't say I've used them.

looking through forums and i found some mods...
http://www.minecraftforum.net/viewtopic.php?f=25&t=64830
u can apparently attack mobs with this.