Ok?, right lets begin...
1st what you have to do is switch the language of ChuChu from English to Japanese. Dont worry, even i cant read Japanese but if you know whats what in the menu from English then you'll find your way online.
Now go to the F Key menu, while still in Jap mode, and do the following on an F Key. Press the S2 button to be able to type English text, then type // now press S2 again to go into Jap text and press = now while still in Jap mode backspace to go the beginning (not deleting...just moving back) and press = again. Now y should have a normal = and a very elongated =
Delete the normal = with a backspace delete and you should have a blank spacea the elongated =, now save that to your F Key.
Now you have to go online...still in Jap mode. Dont worry, you'll find your way through the menu. Now make a password protected room so you can practise without annoying normal chatters. Now when people are just normally chatting and y press your F Key of the = and press enter you'll make a ghost image of the tex above it!!!
Now to get the strange, magical, weird and wonderfull sings. as i said before, go to a password protected room and type the F Key with the elongated =, dont press enter however. Now if u press a letter after the elongated = you'll get signs!
But thats not all of them. With this saved to the F Key you can change to diffeet languages and each different language has its own sign!!!
HAVE FUN!!!