Secure Customer Login For Website

I am looking to create a secure customer login on my site, does not need to include shopping cart or anything like that. It is a login where customers can view their current and outstanding invoices by date, see how long they have to pay this outstanding invoice etc etc. I want to be able to edit all the applicable information: i,.e,. usernames and passwords will be issued by me, and i can then upload invoice information which the client can login and view. Would like a freelancer that is capable of implementing the above into my site, speaks good english and can work with PHP, MySQL, CMS etc. in your bid please provide what information you will need from me etc to get this done and a deadline that is realistic, time is not an issue i want it done correctly. I want this implemented on the PRODUCTS page of my site, please see: [login to view URL] to see the current version of my site and see if you can do this prodject. If the budget is too low 30-250, let me know what you think its worth to do this :) Thanks, Jason