Locating or customizing script(s)

Hi. New member and I have heard many great things about WPMU DEV, especially about it's support staff! I am looking for script(s) for a secure internal messaging system that is HIPPA-compliant (messages will be kept on an internal secure system and recipients receive an email notification that a message is waiting for them with a link to login and check the system for the message). IN ADDITION, we would like to incorporate a system similar to an IT service ticket (so a "ticket" is created once a message has been initiated so that it can be audited and sent to different recipients until the issue of the message has been "closed.").
I would appreciate any assistance you can provide. You may contact at 310-266-2165 or email me at p@myskybox.com if you have any questions. Thank you!