To LanSweeper
Just FYI in that I have just setup a Vista machine and I get the same problem with a black screen viewer screen. TightVNC (WinVNC.exe and the DLL) will copy over to the machine it will install and start the service, but because it starts it as a system service all I get for a view is a black screen that is the client I am attempting to control. Again this does look to be a tightVNC issue as I previously posted.
Also should this be moved to a new post I feel like NYNets post has been highjacked
To NYNet
Did you verify that the Remote Registry service is set to start?