Write some Software

I need a download script where the frontend user can download 2 files. 1 small file is client specific and one master file is valid for all clients. The master file should be uploaded via the script or via FTP by the admin. The userfiles will be copied by admin via FTP into separate user folders, e.g. every client has his own folder. Things needed: Frontend: • Login form with username and password • Forgotten Password procedure (sends email with client data to admin) • Registring as new client which admin has to approve (email to admin) • Change User Password • Logout link • Date of last login • Date of upload, so the client knows if he needs to download the files. • And of course the download area with the two files • Encrypted download link Backend Admin Interface: • Login form with user and password • Add/edit clients (client data must consist of name, username (max 5 digits) and password) The script must create a user folder (same as username) at the server • Clients must be divided into two groups (explained later) • Search for client group users which shows client data and download link (explained later) • Upload master file to server • Generated client list with last login date sorted by login date • Site settings where colors can be defined and a logo can be uploaded, Admin E-Mail Form • Logout link • Salted passwords The user files are software generated and the name of the generated file is always the same (therefore the need of different user folders at the server), but the content is different and individual for every client. The master file is the same for all clients as described above. The tricky thing: Groups: There will be normal users and such that can download their files without login, because these users are already logged into a shop where a download link to their appropriate files will appear. (The link will be copy and pasted into the shop system by the admin. The link has to be encrypted so that the user cannot guess other users path. Please add timeframe to your offer. If you have any questions, feel free to ask.