Shell Technology Preview build 1054

Shell Technology Preview build 1054 (also known as Shell Technology Preview or NewShell) is a replacement shell provided by Microsoft for testing with Windows 95-compliant applications in Windows NT. The end result is a pre-release version of the Windows NT 4.0 shell and user interface, complete with icons and some feature additions. This version also makes Windows NT 3.51 identify itself as Windows NT 4.0.

Installation
Run  from the installation media. Note that to use Briefcase, you must have Service Pack 5 of Windows NT 3.51 installed. Updating the Service Pack will require you to uninstall NewShell first. Note that NewShell will not install on pre-release builds of the aforementioned operating system.