[Petya V4sechkin]

Scaltro, в XML-файлах в папках
C:\ProgramData\Microsoft\Wlansvc\Profiles\Interfaces\{идентификатор}

[Scaltro]

А в ХР?

[Petya V4sechkin]

WirelessKeyView FAQ (Recover WEP/WPA key)

Q: What is the Registry location that Windows XP stores the wireless key ? A: The wireless keys are stored in the Registry under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WZCSVC\Parameters\Interfaces\[Interface Guid]. The [Interface Guid] is a unique GUID value the represents your wireless network card. The keys are well-encrypted by Windows operating system, so you cannot watch them with RegEdit.