I found:
getpwent, getpwnam, getpwuid, setpassent, setpwent, endpwent

Which are great for getting info from the passwd files, but are there any   
API for setting/changing the data in a passwd database?

Does the 2nd step require me to code for file manipulation?

John A. Maier
Kemper Military School and College
Director of MIS
Voice: 660-882-5623
Fax: 660-882-3778
Email: johnam@kemper.org
Web: www.kemper.org