Is there a way to make village info mod work on vanilla Minecraft server
I'm a little out of the loop when it comes to Minecraft modding, but a quick look at the docs for Village Info state that:
Vanilla Mod does not work in SMP.
However the Forge Mod can support SMP if it's also installed on the server as well (forge server). So it won't work with a vanilla server I'm afraid.
Note also that this appears to only work in the 1.6 version according to the Minecraft Forum announcement post.:
Edit: SMP support is currently on hold, but might return in the future. Only the 1.6 version supports it.