[Lynne]

Try something like, in vbcms_content_article_preview, find and remove:

        <vb:if condition="$showpreviewonly">
            <vb:if condition="$previewvideo">
                {vb:raw previewvideo}
            <vb:elseif condition="$previewimage" />
                <a href="{vb:raw page_url}">
                <img class="cms_article_preview_image" src="{vb:raw previewimage}" alt="{vb:rawphrase article_preview}" /></a>
            </vb:if>
        </vb:if>

And then under this:

            <div class="cms_article_txt_content postcontainer">
            {vb:raw previewtext}
            <vb:if condition="$preview_chopped">...</vb:if>
            </div>

Add this:

<p class="bottom_image">
        <vb:if condition="$showpreviewonly">
            <vb:if condition="$previewvideo">
                {vb:raw previewvideo}
            <vb:elseif condition="$previewimage" />
                <a href="{vb:raw page_url}">
                <img class="cms_article_preview_image" src="{vb:raw  previewimage}" alt="{vb:rawphrase article_preview}" /></a>
            </vb:if>
        </vb:if>
</p>

And add to additional.css:

.bottom_image {display: block; clear: both; float: none; text-align: center;}
.cms_article_preview_image, .showpreviewonly object {float: none;}

You'll probably want to tweek it a bit to be how you want, but that's the basic idea.