Do i need to buy a license for each computer i have at home? Having them all behind the same router, it seems odd why shouldn't i have the right to install my maybe-soon-to-be-bought Prevx on all of them. Also, what about dual-booting? One of the PC's is a dual-boot XP and Vista machine (for testing purposes mostly), do i need two licenses for that single computer? If not, how does Prevx know it's one and the same computer?