retaining form values

[melrse]

I have 1 form which is a test. I have the form values set as value="<? php echo $Name ?>".
I need to allow a person to access a presentation from within this test form if for example they are unsure of an answer they can return back to presentation. I need to retain what they have answered on the form b4 they choose to go out to presentation when they come back. If they only use the back button, the values are retained. If they reselect to take the test from the presentation, I loose all.
How do I do this?

[Anon]

You need presistent storage for data so you need to use a database, a text file, or cookies. When the user returns you check this storage for the proper values and automatically insert them if they exist.