Web interface where clients can log-in and view reports

This is what I am looking for. A client of mine owns a company and has a website for it. He would like a place where his clients can log in and view reports that he has given them. His clients should only be able to view their own reports and know when elses. It needs to be very user friendly and needs to be really easy for him to upload the reports to each of his individual client folders or whatever. The web interface needs to reflect his current website [login to view URL] but does not have to look exactly like that, just reflect it. Please do NOT bid on this job if you have not done something like this before. I would also like to see examples of work like this that you have done before. So here is what I am looking for in a breakdown: This is going to done into (2) different tears. Tear 1 - The master (Admin) web interface used to create accounts for other businesses. Need to be able to do the following: (1) Create User ID's and Passwords (2) Automatically Sets up an directory for that user using the users ID Tear 2 - This is the client web interface panel. Need to be able to do the following: (1) Be able to set three types of permissions for the users. FTP (add and remove files), Rename files, move files