Was online browsing PS websites and came across these codes to use. All you have to do is either enter /em or /emote, followed by one of the following commands:
Bow, Cabbagepatch, Charge, Cheer, Choking, Chestthumping, Dunno, Fistup, Halt, Nod, Stinky, or Wave.
Enjoy folks...
P.S. An Example for anyone who doesn't understand:
/em charge
That's it and yes, that easy!