virtualbox.org

Sorry for such a noob question, but I downloaded and installed the latest version of Virtualbox. It doesn't show up on the menu, and neither of those commands work: virtualbox, virtualbox-3.0, VBox. How can i run it?
Thanks

If you reboot the host you should see the run icon under Applications -> System tools.
If not then something is wrong and you might need to reload it. Did you see any errors when you installed it?