Regular user to run useradd?

Ok. So I need to be able to setup a general account that users will login in with. This account will run a script that, basically, creates a user account for them on the machine. I know this isnt a very clean way of doing this, but bear with me.
So my question is, how can I setup permissions for this general account to be able to to run the useradd command without giving the account same access as ROOT? What would be the best way of doing this? Thanks much.
waugerAsked:
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liddlerCommented:
sudo
Download and install sudo from www.sunfreeware.com
and configure it (with /usr/local/sbin/visudo) to allow that user to run the useradd command.
The entry will look something like:

user_name ALL = NOPASSWD: /sbin/useradd
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durindilCommented:
On Solaris 8 or 9 create an RBAC role with a user creation profile.  Then assign this role to the user account.  You can give granular root access this way.
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CadburyKatCommented:
chmod 4711 /usr/sbin/useradd
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