The query in ppm uses a glob pattern so it makes sense that it would match lib"win32" since you query was on "win32". Any module name that contains "win32" would be returned. In my case it returns :

ppm> query win3
Querying target 1 (ActivePerl 5.8.0.806)
  1. libwin32              [0.20] A collection of extensions that aims
+ to provide comprehensive access
to the Windows ~
  2. Win32-API             [0.41] Perl Win32 API Import Facility
  3. Win32-GUI          [0.0.558] Perl-Win32 Graphical User Interface 
+Extension
  4. Win32-Process-Info   [0.013] Get information on arbitrary process
+es in Windows NT
[download]