I have a VS2003 solution with 21 ASP.NET 1.1 projects in it. My goal is to eventually migrate them to 2.0 and then 4.0. There are mainly internal admin apps for different de
Why not just convert them directly to .NET 4.0?
Beware when you move them to .NET 2.0 that the default project type in Visual Studio 2005 changed from the type of project you're used to in VS2003 to "web site" projects. But with Visual Studio 2010, you've got the same Web Application Project you're accustomed to, so why not just go there directly?
Also, be aware that VS2010 can target .NET 2.0 applications, so there's really no reason to stop there.