Creating and activating a temporary page while my site is under constructurion

I am about to start building my website using Magento Community. I'm looking for someone who could create a temporary page stating that the website is under construction and will be up and running at a certain date. I would like to avoid potential customers or browsers viewing the site while I'm building up the website. This job should also include activating this page on Magento for me. The temporary page does not have to be fancy. A few lines stating that the site is under construction and some background image. Nothing more. I would like this to be completed within a day. Thanks.