more types plugin – display all post of post type on page

I don’t know the specifics of your plugin but I’ll assume they are registering a custom post type.

I will also take the liberty and say you want a post based loop for your “pre-enjoyed” custom type, much like the default loop that most blogs have.

One quick method to do this is to get your theme’s loop ( found in index.php or maybe loop.php) and copy and past it into a new blank php page and name that page–> single-pre-enjoyed.php

you then tell the loop to only grab posts from the post type pre-enjoyed using a query, for instance.

$query = new WP_Query( 'posts_type=pre-enjoyed');
// The Loop

Hope this helps, there are many ways to do this, so maybe provide some more details.