how to verifying site with Google Webmaster Tools

Before Google Sites will generate a sitemap, you must verify your site with Google Webmaster Tools:

• Sign in to Google Webmaster Tools using the same account information you use to sign in to Google Sites.
• Click "Add a site...", enter the base URL of your Google Site in the box that pops up, then click "Continue."
• On the following page, select the radio button next to Add a meta tag to your site's home page.
• Copy the meta tag (for example, <meta name="google-site-verification" content="z5mJLjVGtEe5qzCefW1pamxI7H46u19n4XnxEzgl1AU" />) from the Instructions box.
• In a new browser window or tab, navigate to the Google Site you wish to verify. (You will need to go back to the Webmaster Tools page, so do not close it.)
• Select Manage site from the "More actions" drop-down menu.
• Select the General tab under the Site Setting area.
• Paste the meta tag that you copied on the Google Webmasters Tools site in the box next to Google Webmaster Tools verification.
• Click "Save changes."
• Go back to the Webmaster Tools page where you copied the meta tag.
• Click "Verify."