I got this off of http://www.hdtvinfoport.com/hdtv-buyers-guide.html "An External HDTV Receiver is needed to receive High Definition Television Signals, regardless of the source. This includes Cable, Satellite, OTA Broadcasts, and (High Definition) Digital-VHS recordings; also HD-DVD’s, when available. An HDTV Receiver is also needed to properly display DVD’s with Progressive Scan, as well as Progressive Scan and HDTV-Capable Video Games. " So does this mean I have to get a HD reciever even though I have a HD monitor that can display 1080i through DVI??