Allowing a registration

Hello,

Having to create a forum for an association, I'm discovering PunBB.
I have a little question: is there a way to allow a registration before it's done?
In other words, I'd like this:
- The person fills in the registration form.
- I check the infos in it.
- If they are correct, the person can become a member of the forum.

I've seen that there is a plug-in to create users, but that would be too long.

Thanks in advance,

A.