Copy/paste each of these three files — msvcm80.dll, msvcp80.dll, msvcr80.dll — located in to the folder c:\windows\WinnSxS\x86_Microsoft.VC80.CRT — into c:\windows\system.
Also Copy/paste file — mfc80.dll — located in to the folder c:\windows\WinnSxS\x86_Microsoft.VC80.MFC — into c:\windows\system.
This should solve your Norton problem. Peace.