Google is making our jobs easier !
It has introduced a new site map upload service.

In order to get every page of your site crawled by google increasing your chances to get a decent ranking, you need to have any single page crawled. Search engines aren’t clever enough to understand it from your home page, therefore you need to help them and maybe tell them where to find the magic site map file listing all your pages.

If you have a google account log in to : http://www.google.com/webmasters/sitemaps/login

You need to have a site map of your site in a XML format that is suitable to google. You can buy products to do that or you can do it yourself online using : addme tool http://www.addme.com/ror-sitemap-generator.htm

or : http://www.xml-sitemaps.com/