i tried t find WIN32::GUI but there is no such module

If you're using the line command version of ppm and trying to install "WIN32::GUI", you probably won't find it. The names of Perl modules are case-sensitive and the module that you want is "Win32::GUI". In other words:

• ppm install WIN32::GUI will not work
• ppm install Win32::GUI should install the Win32::GUI module