If you do a google search for VNCed you may come across a few sites referring to 'VNCed Uninstaller' and removing 'left-over files/extensions'.
Just to be clear, VNCed is open-source software, it is installed by simple extracting a zip file, it can be uninstalled by simply deleting the folder. VNCed only writes to files with in the application folder, no registry modifications are made.
The VNCed UltraVNC MSI Creator, may write to the registry keys, in order to setup 'MS-Logon ACL details'. These settings are then extracted when building the MSI using MSLogonACL.