Acts_as_attachment next steps

http://weblog.techno-weenie.net/articles/acts_as_attachment is an
excellent introduction, but I am a newbie and need the next step
outlined for me:

How would I implement a controller/view (form) for the model that the
attachments model belongs to? (The content items that have pictures
attached)

Or should I just make the content item model acts_as_attachment instead
?

Does anyone know of a tutorial that has this explained, or could explain
it to me?

Thanks,
Ivan(oats) Storck