thelordofscrubs

So i've got my multiplayer server set up all fine and dandy, but when i go to use the mailing system it kinda sucks. my friends can all send me stuff, but i cant send one of them anything, because his name has an Ü in it. is there a way to type this in game, or change the player name? he tried changing his steam name, but the name in avorion stayed the same.