plugin installtion..

hi guys…happy new year first of all.

Now i have dl wp 2.0 and am trying to install the Post Icons for WordPress located here http://devcorner.georgievi.net/wp-plugins/wp-post-icons/ i have it activated in my admin backed but now i have no idea where to place this code <?php get_post_icon(‘id=5&fit_width=100&height=100&expand=true’); ?> any help will be appreciated.

Thanks