For example,this blog's sitemap is located at:
If you have a google account and use webmaster tools, you can now add your faso website to your webmaster tools.
To verify your site go to "Admin Info" in your control panel and you can enter the verification meta tag down toward the bottom of that page.
After verifying your site you will simply tell google that your sitemap is located at http://yourdomain.com/sitemap.xml
We'll try to get more detailed instructions posted here soon.