Login redirect

[RemcoR]

I hope that you guys can help me with this one..

I wont my users to login on the home page (Like: http://www.domain.com) and be redirected to a sub domain (like: http://sub.domain.com) and automatically logged in on the sub domain is this possible?

Thanks in advanced!

[datahell]

You should point the login form's action to the subdirectory's index.php file.

For example:
change this:

form action="index.php"

to something like this:

form action="http://sub.domain.com/index.php"