[rhelv5-list] Sorry OT wrt vsftpd

[ImagePlace IT <ipit image-place com>]

Greetings,

Please except my apologies for being off topic.  I'm looking for a 
pointer to recommended practices.  (With an explanation and attached 
question).

I need to configure a vsftpd service denying anonymous logins and 
sharing nothing.  That is, customers get a username, password and a dir, 
with full permissions, without the ability to see other dirs.

Q: How to create and manage usernames and passwords without giving them 
a system user/group account?  Or should I give the system account and 
deny shell logins  and access to other services etc...?

Thanks for any pointers.

Jeff