I want To give my site URL to Google. But I need a Sitemap to make my site Live on Google. Pls any one can tell where is sitemap located. So i can Provide for listing my site.

You need to activate the sitemap-extended plugin to generate sitemap files.
Set the plugin options as you wish and please read the plugin's info.
When the plugin is activated a new button Sitemap tools will appear on the Overview page.
Clicking this button will generate sitmap files.