Create/ Re-design E-book landing page/Sales letter

First off this is of Adult nature if that matters. Not pornography or nudity but an adult topic. I recently finished writing an E-book. I have created (in 5 minutes) a terrible landing page / sales letter type site using Microsoft Word just to get some content on the domain for now. I would like the page re-designed with the goal of converting as many visitors as possible into purchasers of my E-book. I would like the page to be search engine friendly with SEO. Ethical SEO ONLY though, I'm not interested in anything that is against google's terms that could cause more harm than good. The site is **I will disclose the URL to interested parties** I don't care if any of the current material on the site is included with the redesign or if it is re-written from scratch. Whatever would get the most sales is my goal. What is on the site now is basically just excerpts from the E-book to get content with key words etc on the site as it's already been indexed by google and MSN. Thank you, Steve