Creating wizards

Hi
I am trying to create wizards byt having the user go through a series of forms. I also need them to be able to go back to previous forms and see the data that was there.

I am unsure though of how to handle the forms properly, I will be hiding the forms when they move on to the next one and one to show it if they descide to move to the previous. When they presse finish I what all the forms to close

I could do with some advice on how to handle this

cheers Davoman