When you add your url to a search engine,just be aware that most search engines only update new submissions between 4-6 week intervals,so don't expect immediate results.
Another useful tip is to add Meta tags to your index pages.
Meta tags are basically keywords that are descriptive of your boards content.You place them in the head of your main index pages.
Here's a couple of good guides
http://www.submitcorner.com/Guide/Meta/
http://www.scrubtheweb.com/abs/builder.html