If you dropped a bundle on a high-end computer display or HDTV, you could be in for an unpleasant surprise when you slip your new high-definition DVD of Star Wars: Episode III into your Windows Vista PC. Vista, the next version of Windows that's slated to appear in about a year, will feature a new systemwide content protection scheme called PVP-OPM. If your monitor doesn't work with PVP-OPM, all you'll likely see is either a fuzzy rendition of your high-def flick or Hollywood's version of the Blue Screen of Death--a message warning you that the display has been 'revoked'.

PC World