Changing my forum name

I just did my best to do due diligence and near as I can tell, there is no way for me to do this.
I am regretting setting up such a lame and impersonal forum name as t-t and wishing I had made
it Tucson_Tom (or TucsonTom) as I do on other forums. Is this something an admin can/could/
would maybe (please) do for me, silly as it seems. Or should an admin nuke my account and I
should start over and reregister.

I ask this since I anticipate being more involved in the forum, though I registered quite some time ago
and have done virtually nothing here. Anyway, thanks either way in any event.