Scripting question? Altering my characters avatar...

Hello again everyone. I am currently playing a game as a male half-elf character. I have noticed in places such as Tarant that some of the male half-elfs use the pure elf character avatar. My question is this. Is there any way to alter my half-elfs avatar to be that of a pure elf in the game? (so he has the body type of an elf) I realize this might be a scripting issue or involve changing a file or something so I thought the best place to ask would be here. Thanks to anyone who can help me out.