Hello nithr and welcome to the CRT forum. There's only 1 place I know where you can purchase the Diventix processor. e-tech in Phoenix AZ. http://www.etechvideo.com/home.htm
I think these guys were watching a lot of standard DVD that was up-scaled by the Diventix to 1920 x 1080 (1080P) or there-abouts. So far this has only been done with the sony G90 and electrohome Marquee chassis, I would stick to one of those 2 platforms unless your really adventerous. Also, if your new to CRT a pro-install is highly recomended.