I've dug the old 520 ST (upgraded to 1 meg)out of the closet and had good luck getting everything back into shape. I've just had a problem with some of the software (demos and games especially) changing my RF output to PAL (only can see top half of the screen, everything looks stretched). Most of the programs offer to switch back to NTSC by pressing 0, but this doesn't seem to do anything. Obviously software put me in the wrong video mode, so is there a TSR program that can switch me back???