nicholas: thanks for the link.
I also have a Picasso IV and I, too, have had problems setting it up. I managed to get it working with my LCD (even the screens native resolution, something as crazy/high as 1680x1050 works) but I still haven't figured out how to fine-tune the settings for the PAL/NTSC flickerfixer modes - it works but there is heavy vertical banding on the picture.