ok, sorry, I forgot I said I would do it. Anyway, here goes:
If you have different styles, you'll have to change the colors. I went ahead and made it the same colors as the image you posted.
Log into your admincp and go to:
Styles & Templates > Style Manager > Your Style > Main CSS
At the bottom of that page you'll see a box that says 'Additional CSS Definitions'. In that box add this:
.infobox {
border-top-width: 1px;
border-right-width: 2px;
border-bottom-width: 2px;
border-left-width: 1px;
border-style: solid;
border-color: #000;
background-color: #eee;
padding: 3px;
margin-top: 3px;
margin-bottom: 3px;
font-size: 10px;
width: 95%;
}
Save
No go to
Styles & Templates > Style Manager > Your Style > Edit Templates > Postbit Templates > postbit (or postbit_legacy if you are using the one with the post info on the left)
Now find the info you want to be boxed in and add in front of it
<div class="infobox">
and behind the info you want boxed in add
</div>
For example to display the post count in a box you would have
<div class="infobox">$vbphrase[posts]: $post[posts]</div>