Web Page navigation

Hi. I'm trying to make some web pages act as a wizard for filling in information. I have created 3 different pages as separate classes and designed some text boxes for info in each of them. In each page I also have a Next button. When I press this button I want to go from the current web page to the next. My question is, how do I activate and display the next Web Page? Hope someone can give me a hint on this. \Atle