While on the subject of uninstalling, I recommend using a program like

Revo Uninstaller, there is a free edition.
http://www.revouninstaller.com/revo_uninstaller_free_download.html

So first you launch Revo Uinstaller, and it looks like the Control Panel / Add Remove Programs windows.   You select the program to uninstall, and it then launches the program uninstaller program and sits back and watches which Registry locations and File/Folder locations were being look at on your hard drive.  Once the software uninstaller is done, Revo comes back and shows you all the leftover registry entry's and files/folders on  your hard drive and gives you the option to remove it.

I understand that Daz wants to protect its software, but if you uninstall the product, it should remove everything and not leave secret encrypted entry's in your machine, its a dirty practice in my opinion and almost like Spyware or RootKit.  At the very least, they should provide a Daz3D Product cleaner similar to what Symantec and other software company's provide.

Now in this scenario since its the software was already un-installed.  I would recommend you download and install: 

The Glary Utilities
http://www.glaryutilities.com/gu.html?tag=download

Its an excellent and free windows optimizer and has a more robust registry cleaner than CCleaner.