Using ViewModels in ASP.NET MVC 2 - multiple forms

Question

I couldn't find any documentation around using multiple forms in an ASP.NET MVC 2 ViewModel approach.

i.e. In the built in application when you select New MVC2 web app, the register page uses a ViewPage which inherits like this:

Inherits="System.Web.Mvc.ViewPage<rs30UserWeb.Models.RegisterModel>"

I wanted to use that approach on a page with multiple forms, but that RegisterModel only supported one form.