Source code to use .NET 2003 edition?

I am writing a program that use .NET 2003 edition, but I cannot locate the source code to start the program (screen with a selection of configuration program or cancel). I compose it in 2006 and the original group has retired the way of all the computers for more than 3 years and the support is showing that Compact Disc (CD) is blank. Another hard disk crashed back a few years ago. Can anyone help me?
