Bmicah

Ok, i really need some help on whats wrong with my chat! My friends and i have just started a new Tekkit server which as you all know is on 1.2.5 I really want to use the prefixes made with PEX groups but something is conflicting. My chat box looks like this... http://imgur.com/w7TiE62 ...however this is how i want it to look: [world] [Prefix] [displayname/nickname] [msg] p.s.- what is the [g] in front of the world name? Any help is greatly appreciated!