If you mean anywhere under the avatar, here's how I did it in my "postbit" template about an eigth of the way down:
<smallfont>Registered: $post[joindate]<br>
Local time: $post[localtime]<br>
Location: $post[field2]<br>
Posts: $post[posts]<br>
Status: $onlinestatus
</smallfont></td>
You can see how it looks on my board here:
http://forums.realpolice.net
Hope that helps.