I have a gfx card with a VGA and DVI out. Have my LCD monitor on the main VGA and have just connected my LCD HD TV to the DVI with a long VGA cable as my tv has a VGA in, and using a DVI>VGA dongle at the PC end. XP sees the new TV display and I can get a clone of the desktop etc working onto the TV, and windows desktop and games clone fine to the TV and both displays run at the same time. All was fine I thought! However when I play video files be it DVD, divx, WMV-HD, anything, (which is the main reason I connected up to the TV) all I get is a black blank window on the TV. The video still runs fine on the main monitor but the TV is always showing a blank window. If I take the TV's vga lead out of the DVI dongle and put direct to the main vga out everything is ok and video plays ok on the TV, so its def something to do with the DVI. Why does my DVI output windows ok but not any video content???