Create 'sales' homepage within existing wordpress template website

I need to create a 'sales' homepage within my existing wordpress template website. the site is [login to view URL] i want to keep the existing website as is, but change the homepage to a one page sales letter type page. I want to retain the existing website template. I want a sales page similar to this - [login to view URL] [login to view URL] [login to view URL] I done want the menus, or any headings, links visable from this homepage, except to the paypal site. I will provide all text needed and paypal link. Please provide an outline of sales pages you have done, or similar that you think would be good to work off as a template. thanks