Passing form info through from page to page

The problem is that i have to deal with several forms system in my online business. And asking my customer to fill all those forms where the same info is asked to him x times can be confusing for him. For example in the case of the site we are workng on, i'll whow the customer a first GetResponse (autoresponder software) that will ask him for email and firstname. After that, user will go to a form that will send info to a lead selling software and then, he will go to the aMember page. So, what i'd like is that can pass a getresponse form info from the html page where the form is to the lead selling software form and then to the aMember sign up form.