i created a form on Drupal Webform but the kind of form i want is that one question comes with radio button as one of them is selected the next question comes up and then at the end the name and the address comes with the submit and back button please something like this http://www.approvedmerchantaccounts.co.uk/UK/questionnaire7/uk-companies.aspx?gclid=CKaf1ouI6LQCFe3KtAodBkgARA
You should be able to this with Drupal Webform, it just won't look as nice as it does in your example. You can also try to use third party forms and just place the code inside the Drupal wrapper.
Hi, I'm using this to create different kinds of forms. http://codecanyon.net/item/contact-form-generator/1719810 It gives you the code once you are finished putting together the elements of the form. Once you have it you "just" have to inztegrate it with your theme. I can really give you specifics because I don't know which theme you are using, and what kind of form you need.
using / creating a form without utilizing Drupal Form API is not really "the Drupal way" tm. You'll be missing all the security features such as form hijacking prevention that Drupal Form API provides.