Change jailed user login shell

[dsadm]

I would love to change the login shell on the host (unchrooted) from /bin/bash to something else before the user is jailed into their own directory. (/etc/passwd) I would also love to change the chrooted user's default shell to something else. (/var/www/[domain]/etc/passwd)

I can do both of these things manually but I find out when I do, ispconfig reverts back to its defaults thus leaving any user with the special chrooted system inoperable. Is there a way to change the default settings in the first place in the config files? I am very perplexed after many days of trying this on my own. Thanks for any help.

-Adam