Well, Vista is out. However, no official support for VS.NET 2003. So, what do you do if you need to build projects that target the 1.1 runtime? Well, MSBee is there to help. MSBee is a small tool from Microsoft that allows Visual Studio 2005 projects to target the v1.1 framework.
http://go.microsoft.com/fwlink/?LinkId=59384
http://www.codeplex.com/Wiki/View.aspx?ProjectName=MSBee