Setup Microsoft AD; Install Exchange, Sharepoint - updated

Hi, we are looking for someone to do the following tasks: we have a windows server 2008 R2 behind a cisco firewall at a hosting provider 1. Setup Cisco Firewall 2. Setup Microsoft Active Directory and register the users currently in our company (currently 5) 3. Setup Microsoft Exchange 2010 and use active directory users 4. Setup Microsoft Sharepoint 2010 and user active directory users Secure the Installation so that the server can be placed in the internet. Maybe, help with some sharepoint setup tasks. But this can be done later once the system has been setup as part of a different project.