> The following problems have been detected in the list header:
>
> * PW= <Missing>
> Warning: You have not specified any password for the list. This setup
>          compromises the security of your list and is strongly discouraged.
 
I always get this when I replace the header of my list. Why? It doesn't
seem to have any effect. What does 'specifying a password' mean and
how is it done?
 
Jeff