I see websites that allow for the "visitor" to enter information such as "name" "email" Birthdate and etc. This information is enter on the affiliate website and then when the user submits that information it is automatically entered on the affiliate site. How is this done?
Not quite sure what you mean, but the info is passed on to the affiliate program ( the people paying you to collect user info). You generally will not get this info.
This is probable the wrong for forum for such a question and maybe best addressed in the php or html sections.. However you need only create a form with the action been the second result after the fact, which is usually a confirmation page on the real site or something similar...
If the site is cookie based whatever they do even if they close the site completely and visit again - you will see the affiliate again. (unless they delete browser cookies)... so make your program cookie based. Karl