If you followed guides for the new post thumbnail feature before WordPress 2.9 is out, they might tell you to paste this codes (or similar) into The Loop.

	 'alignleft' ) ); ?>

However, the function names above were based on wordpress 2.9 RC1. The functions names actually changed when WordPress 2.9 is out.

• has_post_image() -> has_post_thumbnail()
• the_post_image() -> the_post_thumbnail()

So the codes you need to use is:

	 'alignleft' ) ); ?>

That’s it.