This isn't too hard. On your desktop, go to the v5 icon and right-click it. In the list of options that comes up, select 'delete', and confirm it.
Then, open Windows Explorer. go to your 'Program Files' directory, and look down it to DVDFab 6 - open that folder, and look for the DVDFab.exe file (will have the same icon, if you're using that view option, as your desk icon had). Right click on it, select 'make shortcut' from the drop-down menu, then drag and drop it to your desktop.
Close Explorer, then with your mouse cursor anywhere except on an icon, right click it, and select your desired sort method for the icons, click on it, and enjoy the new pointer to DVDFab v6.