Small company workflow management system

Hello Freelancers: We are going to build a simple project management system for our company, it should be written in php & mysql. There are four parts of this system, and here is the details: Part 1:Project manager box a. We should be able to create new projects b. Edit project content, all are simple forms to let our staff do data entry to make record of their daily work Part 2. File Manager This is simple for php experts too, and it should have the following function: a. Create folder (from here, we will be able to create new folder on server) b. Move Folder (from here, we will be able to move one folder from one place to another) c. Delete Folder (select a folder and delete it) d. Rename folder (select a folder and rename it) e. Create files (select files from local machine and upload it to the target folder) f. Move Files (from here, we will be able to move one file from one place to another) g. Delete file (select a file and delete it) h. Rename files (select a file and rename it) Part 3, User Manager We need following functions: a. Create groups b. Edit groups c. Creat users d. Edit users e. Creat departments f. Edit departments Part 4. Task Manager: It's a simple form for admin staff to assign work to other staff at lower position. I have made the html files for your easy understand, but I'm not so good at web design, so it looks very plain, and you will need to make a simple template for it. Well, I'm oscommerce fans, so if possible, please make look like oscomerce administrator panel. However, you can create other designs for it if you have better idea, but, you will be asked to show me the theme before you work.