Use one of the following procedures, as appropriate for your situation:

• If you obtained the custom GINA module from a third-party software vendor or third-party hardware vendor, contact the vendor to inquire about a replacement. 
• If you developed the custom GINA module, create a new solution that uses the credential provider model in Windows Vista. 
Note Custom GINA modules use the following registry subkey:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\GinaDLL
If the GinaDLL subkey is present, it contains the name of a GINA .dll file. The GinaDLL subkey is not present in default installations of Windows.