[support] constructing CCK node by hands....

Hi all, i'm trying to implement the following feature in my site. I want the user select the path where he uploaded images. That's ok. Now my problem. I want to scan that directory (ok, i follow image_import) and then i want to build up a cck node by hand. The node would have image, reference to the user that uploaded it, date and other infos (taken from the first form). Then i want to turn it into a ecommerce product. How can i accomplish these two things? I can' figure out code to create CCK node by hands, neither the way to make a node a file product by hand. I want to show to the user thumbnails and sell images.

The reference i found are http://drupal.org/node/53119