I have just completed a very exiting Silverlight project hosted in Windows Azure. One challenge I had during the development was setting the start page in the web role project.
During development this of course wasn’t an issue – I just right clicked the page I wanted as startpage as selected “Set as Start Page”.
When I deployed to Azure the start page wasn’t recognized. To set the start page in Azure it is necessary to do one of two things: 1) Implement a start page called “Default.aspx” or 2) specify the start page in the web.config file:
Setting the defaultDocument value in the web.config fixed my issue.
thomas martinsen 
i trying an asp.net application to be deployed on azure, i prefer the startup page to be a home page located in /account/home.aspx relative to my root directory. How to specify in this case?
Hi, thanks a lot for the advice, Worked perfectly.
You are a star! This worked perfectly – Back on the road with ASP.net!