Multiple web.config

Hi
My problem is , that i am hosting my website which users forms authentication.
For form auth. , I have set login and default pages that are residing in one directory of my website.
Now i want another directory to be under forms authentication for which i require another web.config file so that i can specify another login and default page for that directory.

So how can i place multiple web.config on my hosting provider?

Next If they dont support multiple web.config file
Is there any way so that i can handle multiple folders with forms authentication from one root web.config file?

Details and examples will be welcomed
Thanks ...