Windows NT 3.51 build 976

Windows NT 3.51 build 976.1 is an unleaked build of Windows NT 3.51, mentioned in the file  from warez group PWA's leak of NewShell build 1054.1.

Run "Checkin /?" or "ExecMail /?" for details. Please make sure you use ExecMail.Exe from NT build 976 or later.