19561 Article Administration

We need a php script to manage and display articles for a non profit organization. There will be 5 main categories in which articles can fall There will be an article administration module with document upload in case article body is a file We also need search and sort capabilities Articles will only be posted and edited by ADMIN Anyone can see the articles Each article will have: Author Title Summary up to 1000 characters Article Body: formated text or link to document (PDF, DOC, XLS, etc) Category (1 of 5 available) Creation Date MM/DD/YYYY (created automatically when article is saved) Publication Date MM/DD/YYYY Expiration Date MM/DD/YYYY (article should no longer show up when reaching expiration date, but it shouldn't be deleted)