autscheme.xml

Hello,

We are in the process of migrating from EP6 to NW4 environment. We have a custom login page that was changed by creating a copy of the original login page and redirecting the par file in the autscheme.xml. I can't seem to find this config file in the new NW4 platform. Can anybody tell me where I could find this info? Is there any documentation on how to change the login page in NW4?

Thanks,