Restricted user needs to administer user accounts

Hi,

We need to update all our AD user accounts with contact details so that they’re automatically incorporated in our Helpdesk System when users log a ticket. We’d like to get one of our office administrators (non-IT person) to do this. Can I give them rights to change user account details without logging them in as an Admin and if so, how do I do it?

Thanks in advance for any help!

Gordon.