File Storage modification and new Features

Hello, I have a Storage Online system and need some modification and some new fetures to add at this system. The system is in PHP/MySQL with AJAX for the frontend. There is the XML technology for comnuicate with a PC Software. The system run on Linux Centos Server. The system work in this way: - User can signup - Enter in the User admin area - Enter in File manager and here can: upload/delete/move/rename/crypt and decrypt files and create/delete/rename folder. - The user can share entire folder with send a download link to friend. In File manager there is Prototype and Scriptacolous and with httpxmlrequest is possible upload the files, move, rename ecc ecc There is a PC software that comunic with the server over HTTPS with XML whre is possible upload files and entire folder. Waht I need: - Allow the upload of every type of file: now is present a filter that only the allow file extesion can upload. But is not simple for me add every time the new extension that the user request. So I need to allow every type of file in the system - Collaboration: 1) the possibility to who signup a specific account, not for every account, to create a tot of sub-users. For create the sub-user insert email, name, password, storage quota and workgroup. Give it a tot of webspace of its account, a tot of monthly traffic of its account. – 2) the possibility to give different permission to the sub-user – 3) the permission are: upload, download (directly to the files manger not with the shared folder), shared folder, unshare folder, crypt/decrypt, delete files and folder, rename files and folder, move files, send a shared folder.. – 4) the User Admin can create a workgroup where put the sub-user. The subuser in a same workgroup can share with our the files with a commad like shared folder the sub-user can collaborate at the same files. – 5) the User Admin user can view the last login of a sub-user, the history with IP of the subuser action (upload, rename, download, move ecc ecc), the last IP login, – 6) The User Admin can view the webspace of the subuser, empty and full, and the monthly traffic. – 7) The User Admin can create a workgroups and give it the permission and every user in this workgroups have the same permission. – 8 ) The User Admin can upload a files or folder of files and share with every sub-user with function where is possible mark a checkbox near the username of the sub-user. The subuser that have the chek have in his/her file manager the file upload of the User Admin. – 9) The sub-user have always the possibility to send a collaboration files to the User Admin. - Possibility to move, delete entire directory: now is not possible move entire directory with drag and drop because with Internet Explorer 6.0 there are some Freeze of the Files manager Three. Please try to allow the entire directory move. In this scenario I need an Help to my Windows Application developer for integrate the modific to the Windows Software. So is possible the my Widwos tech send you some question from have a clear idea about the structure in background. There is the first step of the Modific that I need: the next will be some integration with web application Like Zoho, Picnik, Autodesk ecc ecc And some structure upgrade. For me is really importat the time: when you write that the project is complete in 15 days, for me at the end of time the wotk need to be complete. Thank you Michele