forms authentication

[lohara]

I have two separate functionalities within the same site. I would like to
use forms authentication and redirect to two separate pages if the user does
not pass the authentication (authentication for one functionality is by
password and the other is by passed in site id). I see that forms
authentication can not be set up in sub directories, it can only be done in
the applicaion web.config. Is there any way around this limitation or do I
have to set up two different sites?

Any help appreciated.

Thanks,
Lloyd