I need a web based script that would serve as a simple archive tool for a large number of PDFs and TIFFs. It would need to have some level of security. Only a hand full of people would publish files but a large number of users would need to be able to search (only on file names not PDF / TIFF content) and view the files (launch them in local viewers). This would be running on a WAN behind a firewall. Any ideas?