Nice site, thanks for sharing information.is there any difference in automated site map and manually created site map.
No there is no difference but you should check the validation of your XML site map before uploading it on server.
With a manually created sitemap, you can set the page priority for each page where in automated sitemap a default priority will be setup for all the pages. This can be a problem to Search Engines like Google because they use the priority information to judge the importance of a page.
You just upload to the highest level of your directory and then have Google verify it in Webmaster Tools.
Thanks for all the tips but I prefer to do thing simple. At http://forums.digitalpoint.com/showthread.php?t=1224642 I wrote: I have many websites including one with 4,500 webpages. I'm using Xenu's Link Sleuth to generate sitemap. Simple and free.
Login your google (gmail) account, on the My Account tab you can see the Webmaster tools button... by clicking on it you will be redirected to your required page.
Online free sitemap generator www.xml-sitemaps.com it can generator 500 max pages free for more pages upgrade the plan www.sitemaps-builder.com - this tool can generator 1000 max pages. If you are using wordpress then use google sitemap generator plugin.