Thanks biohisham for wonderful explanation.
I did step by step same what you mentioned.
1st thing
Earlier also I used the PPM command on the dos promt and graphical package manager used to popup but the package Win32-GuiTest.ppd is not listed in the package list.
2nd
Today I tried ppm-shell.bat after that it showed
C:\Temp>ppm-shell.bat
ppm 4.06 (ActivePerl 1006)
Copyright (C) 2009 ActiveState Software Inc. All rights reserved.
Then I tried
ppm> install Win32::GuiTest
Output was:
No missing packages to install
Does it mean that Win32::GuiTest package is already installed in my machine ?.
Thanks a lot