How do I change my display name in this forum?

At the bottom of this page is a "contact us" link.
There you can ask if you can have a name change.

As to removing posts: you only can remove a post until someone else has
answered on the same thread.

Also, as I understand it, there is only one name change ok'd.

Thank You! so much!

I've been thinking about changing mine to Roger.

a capital idea...