Product ID and Shortcodes

Hi,

I am trying to add images of certain products to pages of the site via your shortcodes. However, the shortcode that I am trying to use does not seem to work – [mp_product_image]

The instructions for the shortcode state to display a certain product you need the ‘product id’ – [mp_product_image product_id=”1″ size=”150″]

I cannot find the product id anywhere on the site, please can you tell me how exactly to use this shortcode and how to find the product id’s.

Thanks

Steve