Hi,
You need to submit your website to Google by this link
http://www.google.com/webmasters/tools/ log in with your Google id as you do with Orkut, Blogger or Gmail...if you don't have google id. create one.
After you register you site with Google it will ask you to upload a file generated to your web server...by this they verify that the webmaster is really you.
This is about getting indexing with Google but that don't ensure you to get searched automatically in the search engines. Please refer this website
http://www.how2makeawebsite.com/ which does provide step by step procedure to do the optimization correctly. Remember that you must invest in the right tools.
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