downloadable form form user

Hello i need to to do this
When a user register he will supply some personal data, name, address, phone ecc..

Now this data should be insrted in a form, which is prepared already with a fixed part, so that this form will contain cusotmized data of the user. One registered this form should be ready to downlaod
So There is a form tha say (example)

Dear customer
you approve to subscribe this contract..ecc.
Name Surname
Adress
..

Joe go to register and supply data
once logged in he should find a form that contains

Dear customer
you approve to subscribe this contract..ecc.
Joe Joe surname
Joe Adress

What plugin can do that?
thanks
..