SEO Tip #1 - Google Sitemap

A page named sitemap.html in your site can help the SE crawlers to access all your site's pages.
This page is a list of all your site's pages listed by their 'title' tag and link to the correct page. Its important to show the hierarchy of the pages as well.

Another kind of sitemap is Sitemap.xml (with uppercase S). This is the sitemap you should submit to Google via Google webmaster tool site.
Google Webmaster Tools provides you with detailed reports about your pages' visibility for Google's crawlers and diagnose problems with its content analyzer tool.

I recommend www.xml-sitemaps.com to help generate sitemaps automatically. More Details