[christon26]

I've tested this on my own board to make sure it works lol

Save original code first

Additional CSS Definitions add:

.guestDisplaynone img {display:none;}

Postbit or postbit_legacy replace:

        <!-- message -->
        <div id="post_message_$post[postid]">
            $ad_location[ad_showthread_firstpost_start]
            $post[message]
        </div>
        <!-- / message -->

With:

        <!-- message -->
<if condition="$show['guest']">
        <div id="post_message_$post[postid]" class="guestDisplaynone">
            $ad_location[ad_showthread_firstpost_start]
            $post[message]
        </div>
<else />
        <div id="post_message_$post[postid]">
            $ad_location[ad_showthread_firstpost_start]
            $post[message]
        </div>
</if>
        <!-- / message -->

This will prevent any images within the post section from displaying and you can add in a link to register to view images in the post underneath the first $post[message] like so if wanted:

<center><a class="smallfont" href="register.php$session[sessionurl_q]" rel="nofollow">This post may contain images, please register to view them.</a>
</center>

Hope that helps!