Greetings everyone.
First of all sorry for my English.

My problem is that I cant check if the node in taxonomy directory or in node directory.
I made changes in uc_product.module  something like that:

$output .='<div class="product_image">';
if(){               //here if  node is in taxonomy directory
   $output .= '<a href="'.'node/'. check_url($first['nid']) .'">';
  $output .= theme('imagecache', 'product', $first['filepath'], $first['alt'], $first['title']);
 $output .= '</a>';
}
else{
$output .= theme('imagecache', '_original', $first['filepath'], $first['alt'], $first['title']);
$output .='</a>';
}
</div>

that's it.