如何使用团队定义更改Sharepoint中站点的默认页面？

I am using the SharePoint extensions 1.1 for Visual Studio 2005 to deploy my website in SharePoint 2007. When you create a new site, there is a new default page with the ContenType: Welcomelinks.... I would like to change this to include my own ContentType and PageLayout in the onet.xml. I am deploying this using Team Definition.I am using the SharePoint extensions 1.1 for Vi