Yes, you can run Windows NT programs in Windows 7. Compatibility mode allows a older program written for an earlier versions of Windows to possibly run in Windows 7. You can also use Compatibility mode to always have a program to Run as an administrator. 32 bit Windows has emulation for 16 bit programs built in. 64-bit Windows only has emulation for 32 bit programs. If the program ran on 32-bit Windows 7 and not 64 bit, then chances are it’s a 16 bit program and you may have to use something like DosBox or XP Mode to be able to run it in 64-bit Windows.