HKEY_LOCAL_MACHINE\SOFTWARE\ActiveState\ActivePerl
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.pl
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Applications\perl.exe

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{F8D77580-0F09-11D0-AA61-3C284E000000}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Features\58C516065CE5F5049A515CCDE6F04D06
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Features\C309926D58C05244CA5E83FC3D21FAB0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\58C516065CE5F5049A515CCDE6F04D06
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\C309926D58C05244CA5E83FC3D21FAB0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Perl
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PerlScript
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PerlScriptFile
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\Perl.exe

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\Folders 
  values 
    C:\Documents and Settings\All Users\Start Menu\Programs\ActiveState ActivePerl 5.8\
    C:\Perl\ ....      scores of values
    C:\Perl582\ ....   scores of values

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\0073DA5F1F5E1EA499BB7D0A64A8211E
  value name 58C516065CE5F5049A515CCDE6F04D06
  value data C:\Perl582\site\lib\XML\Parser\Expat\doc\
       lots of these 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\58C516065CE5F5049A515CCDE6F04D06
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\C309926D58C05244CA5E83FC3D21FAB0

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs
  values C:\Perl\bin\perl58.dll
         C:\Perl553\bin\PerlMsg.dll
         C:\Perl582\bin\perl58.dll
         C:\WINNT\System32\PerlCRT.dll

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{60615C85-5EC5-405F-A915-C5DC6E0FD460}
  DisplayName      ActivePerl 5.8.2 Build 808

  InstallLocation  C:\Perl582\
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{D629903C-0C85-4425-ACE5-38CFD312AF0B}
  similar values 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ActivePerl 522

HKEY_LOCAL_MACHINE\SOFTWARE\MusicMatch\MUSICMATCH Jukebox\Save\Extension
  value  .pls   PerlScriptFile

HKEY_LOCAL_MACHINE\SOFTWARE\Perl
  value  BinDir  C:\Perl\bin\perl.exe


HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\Environment
  value  Path  C:\Perl\bin\;C:\WINNT\system32;C:\WINNT;C:\WINNT\System32\Wbem;C:\Program Files\Common Files\Adaptec Shared\System;C:\Program Files\Support Tools\;