Its important to note there are a few types of sitemaps. You can create one from scratch for example that Google may find and Spider and that your users can read as navigation.
OR you can create a google XML sitemap that is like a direct link to assure google spiders your pages. You can setup a google sitemap account here
target="_blank">https://www.google.com/accounts/ServiceLogin?service=sitemaps&nui=1&continue=https://www.google.com/webmasters/tools/siteoverview%3Fhl%3Den&hl=en
There is a cool wordpress plugin to generate the XML:
http://www.arnebrachhold.de/2005/06/05/google-sitemaps-generator-v2-final target="_blank">
http://www.arnebrachhold.de/2005/06/05/google-sitemaps-generator-v2-finalGoogle XML is a more effective way to assure google catches all of your pages.
Thanks-