forms & confirmation links

I need to create a bunch of forms that users can fill in and the data is saved in the a database table. No problem, there are numerous form plugins out there.

BUT: I need the user to confirm everything they entered in that form via activation link. Just like a newsletter plugin with double opt-in, but only for a regular form.
(Which is a sort of event registration of sorts)

My guess is I’ll us cforms 2 to generate the form and then do something like the suggestion here:
http://www.deliciousdays.com/cforms-forum/troubleshooting/how-to-create-a-confirm-your-email-address-form/?value=confirmation%251&search=1&ret=all

Could someone please outline, how exactly that php file needs to be set up so that it does what it’s supposed to?