Tip - How to break into registry to explore HKLM\SAM and HKLM\SECURITY keys?
This article explains how you can use Psexec.exe to execute registry editor to explore SAM and SECURITY registry hives.
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http://www.windowsnetworking.com/kbase/WindowsTips/Windows2000/RegistryTips/RegistryTools/HowtobreakintoregistrytoexploreHKLMSAMandHKLMSECURITYkeys.html