Hello. I want display shopper information ONLY in mail to administrator, but no displaing in client's mail. Thanks
Not sure what VM version you have but,
Look in \components\com_virtuemart\views\invoice\tmpl\invoice_order.php and \components\com_virtuemart\views\invoice\tmpl\mail_html.php
If you edit, make sure to do a template override where to copy the files to \templates\[your template name]\html\com_virtuemart\invoice\invoice_order.php and edit the files here.
this way, when there are VM updates, you will not lose your changes.
There is also module for editing Virtuemart Emails: http://www.interamind.com/index.php?Itemid=84 (http://www.interamind.com/index.php?Itemid=84)