active desktop for NT 4

I think you need IE 5.0.
There's an article dealing with hiding the Active Desktop that may give you some help. Type the following in the address box of Internet Explorer:

MSKB Q249215

1st nt4 install
2nd sp3
3rd ie4.01 (AD enabled!!)
4th sp6a
5th ie6

thats it

good luck

One way to get it is to get the IEAK.

You can custom configure your own Internet Explorer and include the Active Desktop option in your Corporate install.

The download is big and you will only want to do this with a high speed connection. But it is what I did to get the Active Desktop on my NT 4 workstations.

The Active desktop functionality comes as part of windows 2000/98. It appears to have been initially introduced with Internet Explorer version 4 (IE). If you can get a hold of this version of IE and install it - you will have an option to also install "SHELL ENHANCEMENTS" or something similar. This will give you the functionality of active desktop and other enhancements (including putting launch buttons on your taskbar).
Hope this helps you out :)