Google Sitemaps Generator, Editor and Keyword Analyzer Free Online

Enter the base URL of your site and click The page will refresh (after a while) with a list of the pages from your site. Any pages that could not be loaded will be flagged. (Uncheck these entries) Uncheck pages you do not want to include.

Toggle between Google Sitemap view and
Edit Map view to edit the sitemap
Edit LastModified, ChangeFrequency and Priority for individual pages, or increment-decrement for all by clicking arrows. For a demo of how to edit a map, click Edit Existing Map, load the Demo Map and click the Edit Demo button.

Click Google SiteMap to display the map.
When it's correct, click anywhere in the Map View, right click and copy. Paste into notepad, save as sitemap.xml, upload to your server and submit the sitemap to Google.

Check 'Include HTML Map + RSS' before you create the map (to include page Descriptions) and click HTML SiteMap to create a HTML map of your site. You can save and put this in the root of your site and link to it from your pages to make it easier for Google to follow the links, and provide a general Sitemap for your visitors