I came across this error today when trying to Remote Desktop onto a windows XP PC I received and error saying that I could not connect due to the awgina.dll.
Now I am not too clued up on what gina does what but I was convinced that the gina that should be loaded was msgina.dll. So I did some digging in the Registry. My first thought was to look in HKLM\Software\Microsoft\WindowsNT\CurrentVersion\Winlogon and in there I saw a value for the gina location pointing to awgina.dll, change this to msgina.dll and reboot your PC and you should be able to RDP to it with no problems.
NB please be careful when editing the registry. It is done at your own risk I cannot be held responsible for any errors/problems that you may get from editing your own registry.