How to add Domain Users

Hi,

I wrote a Programm to add User`s in a NT Domain via NtUserAdd API. Works grate. Now I try to get this progamm programmatically in an Admin-Environment, to allow some regular Users to add User to the Domain which have normally no rights to do this. I tried something with CreateProcessAsUser and Access Tokens, but it won`t work. Need help to grant the Api-Call permissions to work in an Domain User Environment.

Thanks

Stefan