I have several computers at my office that I want to put on our domain. These computers currently are used by employees with local computer accounts and they have information stored under these accounts. When I join their computer to the domain how would or could I keep their current computer accounts and add them to the Active Directory so they could log in as usual access the network resources?

Is this possible or do I need to just start from scratch on all this with their accounts and locally stored files? We are using Windows 2008 R2 and all systems being added have the Windows 7 pro or higher. All I want to really do is add the systems to the domain and have their accounts in the Active Directory so they can log in, access files which are already on their computer, and use network reosoures.

If I can add their computer and then add same username and password to Active Directory to get this all to work that would be fine. I am just looking for minimal impact on the user really to get this done.