I guess the default page is currently "under construction page".
Please change that to the page, which you want to load on running the website.
Go to the properties of website in IIS and then click on "Documents
" tab. Here define the page, which you want make as default page.
Please go through the below articles to know how to deploy in a step by step manner.
1. Deployment of a Website on IIS
2. Beginner's Guide: Exploring IIS 6.0 With ASP.NET