You can use the following tags

key				will insert
-----------------       	-------------------
<MBR_FNAME>			member's first name
<MBR_LNAME>			member's last name
<MBR_PWD>			member's password
<MBR_EMAIL>			member's email address

<MBR_ACTIVATE_LINK>		link to page that activates the new member's account
<MBR_ACTIVATE_LINK_HTML>	note: 	the text inside this link is customisable in SystemLang.txt
				section: [visMbrRegister]
				label: txtEmail_ActivationLinkText	
				The HTML version encloses the link with an html hyperlink