As far as I know, it should be possible when you got access to the server and can mess around with it's files (if you got a emuserver check for saves/players.save and see what you can change there - imho the Playernames are also listed there - else check the files for characterdata). Someone in the Emuforum told me that messing around there can make the server much more instable or even crash the characterfiles. But I guess when you "break into their system" you don't really care about that.
Else, I don't know how it should be possible, if you don't have any access to the servers (browsing/changing the files or GM rights).
Greets to italy ;) (OT: visited a festival there last summer which showed me how italy and italians can rock ;))