Adding thumb/featured image to post.

Hi all,

I am not so sure this is the right place to post this… This is not through admin but via scripting/coding.

I am creating a plugin that will create posts from external data. I have managed to insert posts and post meta, etc, but I haven’t yet found out how to add a feature image to the post. I know how the images are saved through the wordpress insert functions but setting posts feature images is what I don’t know how.

Does anyone know the functions for this task? I can’t find it in WordPress reference.

Thanks.