I was taking a look at the specifications for VirtualBox... I am familiar with applications such as Returnil & ShadowUser, where I simply reboot to restore. I am NOT at all familiar with apps such as Virtual Box. When comparing a reboot-to-restore app (such as Returnil) VERSUS a "virtualizer" (such as Virtual Box), will someone please explain to me... +What are the main differences? +Which is better? +Which is easier to use? +Which is more secure? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I will be VERY grateful for any help you can give me.