1) Install Visual Studio 2003.
2) Go to References in your project solutions and Follow these options:
a) Right Click on Add Reference.
b) Choose Projects tab in the windows of Add Reference.
c) Click on Browse Button and Select KeyCodeV2.Dll file from "C:\Program Files\Common Files\Crystal Decisions\1.0\Bin\keycodeV2.dll".
Add the file in your references and be happy because now the project will not give the KeyCodeV2 file error.
Hope my solution will help you in this regards. I have also solved it in this way.