>Is Visual Studio 2005 required to do development for .NET 2.0 and ASP.NET 2.0 or can I continue to use Visual Studio 2003?Technically you could use just Notepad. IOW, if you use it just as a text editor and do the compiling mannually outside of it, then yes. Except that you are going to receive a lot of warning and complaints when the software does not understand the new constructs, objects and keywords. So I wouldn't try it as it would be a pain.