Could not get an Acer TM 6592 (Intel mb chipset video) to properly enable a second display. Unit has a custom XP install (ex Olympics re-image) and I could get a Win desktop display on the second display, a Samsung tv, but with no icons or programs showing on it, just the static desktop background. An identical Acer with Win 7 has successfully managed the second display. From this I would assume that the problem is either XP or this particular install of XP. Won't have the time to reinstall with 7 for a while yet. Any comments welcome.