using WinDbg

I am installing Windows debugging tool in windows NT machine. But I unable to open the windows debugging tool. It showing an error message, windbg.exe is not a valid windows NT application.


I download the tool from below links.
http://www.microsoft.com/whdc/devtools/debugging/installx86.mspx#b

Previous Release version 6.6.7.5 - July 18, 2006
Install 32-bit version 6.6.7.5 [15.2 MB]
Note: If you are running Windows NT 4.0, you must first update your Windows Installer to version 1.1 before installing the debugging tools. If you are running Windows 2000 or a later version of Windows, then you already have Windows Installer 1.1 or a later version, and there is no need to reinstall it.
Install Windows Installer 1.1 (Windows NT 4.0 - X86) [1.4 MB]


I follow all the steps to install the tool. But I cant run the tool in window NT machine.
Windbg.exe and cdb.exe.

Let me know what I should want to do run the windows debugging tool in NT machine.

Thanks & Regards,
Kamalakannan Anandan