AD/ Phonebook updates.

[Lion]

I'm Not a Programmer!

I'm running Active Directory in my company with about 2000 users. The
telephone field under the user properties it's very important to us as it's
used to create internal Phone Directory.

Users are moving all the time and new users are coming in or the telephone
number changes. I need to keep this up to date as possible. Is there a
script or VB program of any type that I can attached to login scrip every
months so when user loges in it gets a popup screen with there ID asking
them to type in there Phone NO which is then written in to the file and I
can meagre this in to AD at the later date.

Thanks for your help/advice.