Go to Google Webmaster...add your URL...there should be a place in the admin panel (once you've entered your URL) to add a sitemap. This will lead you to a drop down menu, chosse HTML Sitemap...then simply type in something like this yoursite.com/sitemap.xml Click "Ok" and you now have a Google ready sitemap!
If you review my DP Sitemap FAQ you can easily make one. http://forums.digitalpoint.com/showthread.php?t=531765