Oh, no, I see what you're saying. You can't create your Facebook application with a 'page'. account. It's always created with your personal account. This is simply how Facebook requires it, so that there's always a person at top.
I guess I'm not sure when you say "things will go to that FB page" what you're looking for still. There are 3 things that we're talking about right now:
* A personal Facebook account - This can Like things, comment on things, and create applications. Likes and comments (when not using Facebook as a Page), will go to your personal wall.
* A Facebook Page - This is for your business. You can manually post things here or use it as your Facebook as a Page so that when you Like or Comment on something, they go to this wall instead of your personal one
* A Facebook application - This is created by your personal account only. It's associated with your website (not your page). When someone "approves your application" during login, it's this.
There is no relationship between your FB application and FB page. They are completely separate in FB's eyes. On your website, you can use the JFBCFan module to show your Page, and have people like it, but again, they're separate things.
Hope that helps explain a bit more. If not, let me know exactly what you're doing and what you would expect to happen, and we can hopefully figure it out from there.
Thanks,
Alex