[Jeff Ledger]

creat following css

.imgl {
float:left; /* image float to left in content */
width:150px;
}
.imgr {
float:right;  /* image float to right in content */
width:150px;
}

then add a new 2 bbcode name it with tag imgl and imgr (search to read more about bbcode, how to add), your bbcode replacement should be st like

<div class="imgl">{param}</div>
and
<div class="imgr">{param}</div>