need to change my name

Kia ora Jeff, to change your name and update your details go to your My Trade Me page and click "change my contact details", once you're done click the "Update" button at the bottom.

Jeff, if you mean your name as sent to buyers along with your bank acc number so they match with today's banking matching systems, then that's contained in your payment instructions which you can find in your My Trademe, Settings, Payment instructions - Edit payment instructions link.