Why doesn't my web site show up in Google searches?

[Domo]

I've created a web site for someone but they've noticed it doesn't show up in any web searches.
I develop web pages all the time, but usually it's internal content designed for us in Intranet/Extranet environments so this has never been a concern for me!

So - what do I need to do?

THANKS!

 

[Domo]

Thanks Pho. I had no idea
The site's been up and running for a week - I say site, it's only a single page at the moment.
I've registered the Url with Google, Yahoo and Bing for now + will create a site map as more content is pushed onto the web.