helin16
> where dose SME keep its password files and userlist
That information is in a variety of files, some of which (most) are not exclusively users details.
Do a backup to desktop (on a fairly empty system to keep your backup small) and see which files are included in the backup. View the backup file using rar or Winrar.
You will see though that files like the accounts db (/home/e-smith/db/accounts) have more than just user account details.
So it's not easily possible using the existing sme setup to just duplicate users only. You cannot use some files and not others either, as that will break the system.
There is the Lazy Admins Toolkit which you can use to selectively add, delete, users groups etc etc, but again it is not the absolute answer you want.
There was a post long ago (approx 2-3 years) by Charlie Brady answering this same question, where he suggested some programming was required to extract the required information from the various user lists and password files etc. It needed someone to sort out all the issues and do the programming work though, and was probably not such an easy task.
If you were willing to pay someone to do the work (eg Gordon Rowell), then it could probably happen.