Ron used to do a "change name" sweep every once in a while, but I think it was a bit of a laborious task from a programming vantage. He can probably put you on the list if he does it down the road, as that would maintain your original history of posting.
Without waiting for that possibility above however, you would likely need to create a new account if you wanted to start fresh like Ringo mentioned above.
PS ... I like Aimster!