How to save file as a settings How can i use settings form http://api.drupal.org/api/drupal/modules%21system%21system.module/function/system_settings_form/7 to make a file saved and retrieved using variable_get() ?

I am using Drupal 7.
The settings form does not save entries to a file, but stores the value in the database. It can only be called from a custom module you will have to build.

Below you will find a link to Drupal's own module tutorial. Follow the steps and you will come across the usage of the settings page. (configuration form)

http://drupal.org/node/361112