This video explains how to install Robot Virtual Worlds for Existing users.

Overview:

1. Launch ROBOTC (from the icon on your desktop or Start Menu)
2. Start your trial version of ROBOTC by going to the "Help" menu and selecting "Manage Licenses".
3. Click "Add License" at the bottom of the Management window.
4. Select a version of Robot Virtual Worlds from the "Product" drop-down menu.
5. Select "Start Trial" to begin your trial.
6. Close the License Management window.
7. Go to the "Robot" menu, and make sure that the "Compiler Target" is set to "Virtual Worlds" instead of "Physical Robot".
8. Next, select a Virtual World to use by going to the "Window" menu, select a Virtual World in the "Select Virtual World to use" menu option.
9. Now you're ready to download a program to your virtual robot!