[Lynne]

It should show by default if you are using a default style. If you are using a custom style, it could be the the style designer didn't put it in. In that case, either ask the style author to put it in for you, or add this where you want it (in postbit_legacy):

<if condition="$post['joindate']"><div>$vbphrase[join_date]: $post[joindate]</div></if>

The thing you crossed out on that image is the reputation. Look in your template and remove this:

<div><span id="repdisplay_$post[postid]_$post[userid]">$post[reputationdisplay]</span></div>