I won't try and sound like a professional because I'm not. In fact, a month ago I had never heard of terms like "line doubling" and "progressive scan"! Anyway... being a bored college student I decided to spend a couple of days researching progressive scan and how this is implemented in my Loewe Aconda (2500 chassis)... Now, I don't really want to go into much detail, because I'm still confused with all these bits and bytes running around in my head, but I think you guys might want to hear my results. Basically, I've managed to display a NTSC DVD (thru AV2 scart socket in RGB) in what seems to be an "artefact-free" image that is NOT flickering (i.e. not 50hz mode). What I've done is switched Bit 3 of Byte 5 OFF to disable the NTSC progressive scan (which IMHO is a load of crap due to the horrible processing it does to the picture). Then I watch the DVD with DMM ON. So, you still get a flicker-free image, but WITHOUT the digital artefacts. Perhaps tomorrow, my brain will have stopped spinning so fast and I can work out exactly what I've been doing, but right now here's what I do know.... switching Bit 3 of Byte 5 to 0 turns the NTSC progressive scan off. And also, Bit 2 of Byte 5 controls PAL progressive scan if you have chassis 2400 or higher, but I have yet to get rid of digital artefacts on a PAL DVD picture without the 50hz flicker. I think I'll take a break now. Zahid Saddique P.S. After hours of searching on the web, another thing I've learnt is that the European models are very different from the US models, which have all that 3:2 pulldown and other stuff we don't.