this message system does this styles:

pop-up tail and message system above the player
and the normal dialogue box with name box:

here's a demo of the script (rpg vx):
http://www.mediafire.com/?ndjhvm1mjgz
it contains all the graphics of the message system and the script, there are a lot of scripts in there just get the 2 scripts:
STR22Core_MSG Window EXT and STR22Edit_MWEXT++/Customization section
they are beside each other in the scripts
i hope you can help me :)