show same slideshow on different sites
You should try the features module 


  The features module enables the capture and management of features in
  Drupal. A feature is a collection of Drupal entities which taken
  together satisfy a certain use-case.
  
  Features provides a UI and API for taking different site building
  components from modules with exportables and bundling them together in
  a single feature module. A feature module is like any other Drupal
  module except that it declares its components (e.g. views, contexts,
  CCK fields, etc.) in its .info file so that it can be checked,
  updated, or reverted programmatically.
  
  Examples of features might be:
  
  
  A blog
  A pressroom
  An image gallery
  An e-commerce t-shirt store