Facebook App Question.
I just created a simple facebook app that will prompt users for their name and email address. something like this.

This is for registration to my site. Now, I would like a situation where once a user click allow he/she is logged in automatically to the site since by allowing the app you give your registration info.
I don't want a situation where a user clicks allow, and then taken to the registration form.
I gave too much info here which may make it sound a lil confusing. Nonetheless I hope somebody get the point and helps me out.

Thanks you.
-Ron