or download this
$regstring = HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/NTDS
+/Parameters/
...
$system->Create("CurrentControlSet/Services/NTDS/Parameters/LDAPServer
+Integrity/TEST", $Test) || die "Create: $!";
It creates a key called "CurrentControlSet/Services/NTDS/Parameters/LD
+APServerIntegrity/TEST" at the Services directory, it does not follow
+ the / as folder path.