Registered owners of InteliType software for Windows NT can get a free upgrade by calling the Microsoft Upgrade Center at 1 800 360 7561. I believe you are better off without the InteliType software as WinNT 4.0 provides native support for this keyboard. Use of InteliType prevents configuration of a 3 buttom mouse.
The following key combinations are supported by the NT Native drivers:

MENU + WIN.....................Start Menu
WIN + R............................Display the Run dialog box.
WIN + M...........................Minimize all open windows.
WIN + Shift + M................Undo Minimize all windows
WIN + F1..........................Help
WIN + E............................Explorer
WIN + F............................Find Files/Folders.
CNTRL+ WIN + F.............Find Computer.
WIN + TAB.......................Cycle the minimized taskbar icons.
WIN + BREAK..................Systems Properties.