Phoca Forum

Hello, I am going to develop a joomla website (2.5) and I am looking for a component to manage invoices with 500 users. I need to drop 4 invoices/month to each user and I would like to do it "automatically" (uploading all the invoices to the server and a csv or similar with the user correspondence). Does phoca download do it possible? Any other idea?
Thanks!
regards
Juan