HP xw4400 Workstation - Manual (Page 46)

HP Remote Graphics 4.2.0 User's Guide
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GinaDLL key in regedit and then select the Modify entry in the Edit menu. A dialog
box appears allowing the value of the key to be changed. Type the name of the
custom GINA module in the "Value data:" area. Confirm that the custom GINA
module entered actually exists on the system in C:\WINDOWS\system32. When the
system reboots the custom GINA module is loaded by the WinLogon.exe process.
WARNING : If the value of the GinaDLL key contains the name of a custom GINA DLL,
and the file does not exist in C:\WINDOWS\system32, the system will not start
correctly upon the next reboot. The system will then require a complete re-
installation of the operating system.