a question is never stupid so dont worry about that...im always asking many questions on here :)
Im assuming you mean something like a newsletter. on the given page you would create a recordset of all users (perhaps filter them but a int column in your database for all members who have opted in to receive emails). then you would use Universal Email and when you come to the options for that you would click on the TO button and select the recordset thats associated with the users table. I would suggest giving it a few seconds delay to help the hosting server deal with the emails being sent.
If this is the type of thing you want I be happy to give a more constructive and informative step by step with screen shots.
or Im sure any one else would be nice enough to help :)