My new avatar don't have a second name.

[PonnyGirl]

My new avatar don't have a second name.

 

What I need to do?

[Peewee Musytari]

You only have one name now as an account ID and login name. If you need 2 names to login on an older style viewer that has 2 boxes, you use the default last name of "Resident".

Inworld you can now use a "Display Name" to have whatever name you want to be shown to other people as your avatar name.

http://community.secondlife.com/t5/English-Knowledge-Base/Display-names/ta-p/700173