I've got Novell Client 2 SP3 set up pretty much how I want it on Windows 7 x86 but would like to customise the default image that appears on the login screen to the logo of our organisation. I can see the setting in the client that's referenced in the user guide...

Setting Name: Default bitmap for Welcome screen tiles
Registry Key: [HKEY_LOCAL_MACHINE\SOFTWARE\Novell\Authentication\ NCCredProvider]

I've set this to c:\windows\nlogin.bmp (copied file into place) but although the entry appears correctly in the registry there's no change on the login screen, any suggestions?