Displaying custom field thumbnails outside wordpress.

Hello,

I am a noob but i am really stuck with something.

i want to display the custom field thumbs on a website outside the blog is this possible? How can we do this i managed to get this far with the other fields descript etc etc they work but not the thumb:

$dbh = mysql_query(“select wp_posts.post_title as movie, wp_posts.post_content as details from wp_posts where wp_posts.ID=$id and wp_posts.post_status=’publish'”);

if(mysql_num_rows($dbh)>0){
while($result=mysql_fetch_array($dbh)){
$movie = str_replace(‘”‘,”,$result[‘movie’]);
$desc = substr(strip_tags($result[‘details’]) ,0,250);
$thumb = ????????

What do i fill in next to thumbs? On my blog i normally use:

<img src=”<?php $key=”thumbnail”; echo get_post_meta($post->ID, $key, true); ?>” alt=”<?php the_title() ?>” />

Please please help this humble noob…