You can't change your username (unless you pay ridiculously high amount for Donator/VIP status), you can't delete your account. Just dump this account and make new one or leave if your intention is that.
crazy!!!! ty for the quick response- time for a new account and hope this one gets burried
My advice is let this account active and then when the rank have a reach member, sell your account
For the OP to reach member status, they would need to make almost 50 more posts.
That being said, selling the account would be my recommendation too and the OP could do it right now if they wanted to. However, it would be smarter to sell it once they reach junior member status since prices for junior members are higher and the market for newbie accounts is very small. For the OP to reach junior member status, they will only need to make 11 more posts and because they posted across multiple activity periods and a new activity period will begin in a few hours from now, it should be achievable today. A junior member account can generally be sold for about 0.01 BTC.
Also, there have been very rare occasions where people have asked theymos to change their name and such a request was granted. But it's EXTREMELY rare and almost never guaranteed to happen. In cases where it did happen, they were usually long-established senior or hero accounts. Requests for minor changes such as adding or removing a character are also more likely to be successful.
Finally, the OP could donate 50 BTC to the forum and become a VIP. VIPs have the ability to change their usernames at will. TradeFortress did this and he changes his name occasionally.