I run a computer that is at least 5 years old and has Windows 2000 Pro. Their are some programs that I wish to install or that have already been installed, that will not run on my computer. When I try to run them, a window titled 16 bit Windows Subsystem appears and says, "config.nt. The system is not suitable for running MS-DOS and Microsoft Windows applications. Choose 'Close' to terminate the application." It gives me two buttons, Close and Ignore. Both close the program. Some of these programs have worked in the past so I don't think that Windows 2000 Pro just doesn't work with them. I think it might be a damaged or missing file. I don't know what to do, but I want the problem fixed.