I presume youre not in a position to use superscript?
All of the attempted posts so far (Sic/Justin/kieranv) come up as little squares here.
Does it need some kind of special font/language pack installed?
the one I posted should as it's not an entity, it's a unicode character.
when in notepad, hit Alt +2074
surely you just want to make it a superscript character ?