This is the easiest most way to add your website to multiple search engines. You just need to sign up for the free account at Attracta and then add your website by subsequently verifying it. Preferably verify your site by adding specified HTML file to your root directory.
Then follow the procedure to submit your listing to search engines. Remember if you are using this free service you should do this process frequently maybe twice a month if your site is updated frequently.
If you wish to do the submissions automatically you should upgrade.