Virtuemart Error user register

[mitzycall]

Hi everyone, i need your help, i install Virtuemart 2.0.20b on Joomla 2.5.9
The problem happen when i go to register a new user, the form don't have the basic fields, user name and password, and don't  register the user. But it's have the virtuemart fields. Anybody can tell me what happen?

My site have the register by the user on.
I'm new in joomla, please somebody help me.