Module development and code questions

Hi,
can we upload a file using drupal cms .I have a form like filename:textbox and click on submit that selected file should be uploaded into one of my created folder.this is my requirement.what is the procedure to do this one.Help me.

Thanks for knowledge sharing.

Ashasri

Is there any way to implement "Write to autor" link on views page?

i would like to set it up so that when people submit something (pics, literature, etc) THey have to put it into a categorie from a drop down type form. example: photography leads to b&w leads to portrait or traditional art leads to painting leads to figuritive leads to nude. is there a module that can do this or another way?

Drupal 5. Zen

I had everything set up fine--unregistered visitors to the site saw most of the same things registered users could see after login. Then I tried to figure out how to change the color of Zen, and I must have changed something because now an unregistered user sees the logo, nav bar at the top, right block, fine, but the body shows the greeting," welcome to your new Drupal site," and I can't figure out how to get back to the front page. . .

I'd like to import images for my direct created nodes via script. As i find in related topics it can be done in such way:

scripts for direct DB creation of nodes
// field_image - CCK imagefield
$node->field_image[0]['value'] = $image;

but it doesn’t work.

what is $image in this case - path and image name? Or simply image name?

I also tried following function from imagefield modul, but ....

I've created a custom node module for a client, and they want it to work with Organic Groups in a very specific way:
* one and only one of this node type can be created per group
* only the group admin can create/edit this node
* the node is viewable only on the group home page for which it was created.

If you can point me toward a solution for any or all of these requirements, it would be much appreciated, as it doesn't appear that I can do this using simple group posts.