Springroll

I apologize if this post is in the wrong forum. I tried finding the appropriate one to post and I believe this one is the correct one. I currently have a consulting business website. I need to add functionality to the website that will allow my clients to create an account via my website and they can login into that account. Once they login, they can receive reports from me in document formats (txt, doc, pdf) and be able to download these reports. There should be an admin login where I can send my clients the reports. there should be an additional function where my clients (once login) can be able to send me (admin) their own reports. In brief: 1. allow clients to create their own account 2. allow clients to receive and download reports 3. allow me (admin) to send reports to these clients 4. allow clients to upload reports to me (admin) Because I have some experience in PHP and MySQL, I would prefer the script to be in PHP and MySQL so I can tinker with it and installing it on my website. My website is currently hosted on a Linux server running Apache. It also has PHP 5 and MySQL 5 installed. I would like to know if you can suggest an existing script out there that have the above functions. It can either be a free script or a commercial script. I thank you for your time and consideration. Feel free to email: springroll@gmail.com