Basic asterisk install & stats

I have a dedicated server with Cent OS 5.5 clean install I need a freelancer to: Step1) Install Asterisk 1,8. The platform will only provide recorded messages. Calls will be routed via IP to the platform. Provide suitable security. Disable re-routing of calls, call will terminate at the platform. You will need to explain the steps as you do them by MSN. Step2) We need a system to be able to generate statistics on the platform. This will enable people to have an account and view the numbers allocated to them, calls between periods etc. I am sure that some open source software can be customised to do this. Additionally each sub account can have there own logo, and if necessary point to different translated text. A master account will be able to see all calls from all sub accounts. Ok, installing asterisk and sending to a recorded message (recording a or recording b) should be easy. Disabling onward call forwarding should be a quick job. Customising existing software for step 2 should be also straightforward. You will be working on virtual terminal, and explaining as I said the steps you take.