Best practices for backing up users settings?

I am looking for ideas on how to back up my users settings. I need ideas beyond, windows system back up, or coping the users folders. I want something that will back up all there settings and then allow me to redeploy on any other system. Example I have a user that is currently connected to the domain, would like to remove her account from the domain and just let her be a local user or maybe give her a new computer and her just be a local user. I want all of this users settings, outlook, bookmarks, right down to icons on her desktop to move along with her. Is there a good, somewhat easy way to do this, maybe a good set of tools, some special software? Any help would be much appreciated, thank you in advance.