Different ways to do it.
The elegant way is to get a coder to make you an addon.
The simplest way is to add the words you want to the registration form.
Quick hack:
In admincp go to Appearances/ Templates
Put
register_form in the filter box at top - or just
register then open
register_form
In the template click at the top, then use CTRL+F to locate
date_of_birth
In the code you will see the code I display here - you dont need to understand it, just check it looks the same so you're in the right place.
Code:
<dl class="ctrlUnit OptOut">
<dt>{xen:phrase date_of_birth}:<br /><i>Required</i></dt>
<dd>
<xen:include template="helper_birthday_input">
<xen:map from="$fields" to="$user" />
</xen:include>
CHANGE IT by adding
Rich (BB code):
<dl class="ctrlUnit OptOut">
<dt>{xen:phrase date_of_birth}:<br /><i>Required</i></dt>
<dd>Your date of birth will not be visible on the forum.<br /><br />
<xen:include template="helper_birthday_input">
<xen:map from="$fields" to="$user" />
</xen:include>
Copy and paste in the line in
blue, exactly as you see here.
I always leave a blank line after a change so as to find it again easily if I want to edit it.
Optional. Add
<xen:comment>TIS CHANGE HERE</xen:comment>
on the blank line right on the left. That'll be invisible xcept in admin.
You can then always find it by searching on TIS CHANGE - together with other changes you make which you label like this.
More elegant methods are: creating a new Phrase; or making an include. Neither are difficult.
I suggest that if you use this or similar XF help posts, you copy this post into a document and keep it with the rst of the notes you keep on your site.