Ok I figured it out, it wasn't too hard.
I just looked at view source on the "all products" page. I copy and pasted the html code of the products i wanted to see on the EZpage. Then you have look for, copy and paste this code (located just before the product html code) before the product codes:
<form name="multiple_products_cart_quantity" action="http://www.YOURWEBPAGE.com/index.php?main_page=products_all&disp_order=8&page=2&action=multiple_products_add_product" method="post" enctype="multipart/form-data">
<div class="buttonRow forward"><input type="image" src="includes/templates/YOURTEMPLATE/buttons/english/button_add_selected.gif" alt="Add Selected Products to Cart" title=" Add Selected Products to Cart " id="submit1" name="submit1" /></div>
<br class="clearBoth" />
<table border="0" width="100%" cellspacing="2" cellpadding="2">
and add this code after the products html
</table>
<div class="buttonRow forward">
<input type="image" src="includes/templates/YOURTEMPLATE/buttons/english/button_add_selected.gif" alt="Add Selected Products to Cart" title=" Add Selected Products to Cart " id="submit2" name="submit1" />
</div>
</form>
This is not the exact code to add to your site, you have to find this code specific to your site when you "view source" your all products page. Also make sure the correct amount of <tr> , <td> , </tr> and </td> are present.