[cvsnt] problem with creating user

[Pavel Stehule]

Hello

I am a newbe, and propably this will be frequently questions. I need 
to use cvsnt on linux. After instalation I can work with direct 
access on repository well. But when I can access via pserver, I have 
a problem.

[root at stehule test]# set |grep CVSROOT
CVSROOT=:local:/usr/local/cvs
[root at stehule test]# /usr/local/bin/cvs passwd -a pavel
Adding user pavel
New password:
Verify password:
cvs [passwd aborted]: Only administrators can add or change 
another's password

Why, Can You help me?

Thank You very much
Pavel Stehule