Quick registration form from a non-vb page?

[Franki]

Hello guys. I would like 2 things:

1) to add a quick registration form (only username, password, email address) in a non-vb page.

2) to have a specific usergroup and everyone who registers with the above way (quick registration from the non-vb page) to be included to this usegroup.

Is there any such hack?
Thank you.