Yes Chuck, you're right - but non-interlaced monitors disappeared off the market way back - the quality was too low, quite simply. About when the 386 was the processor of choice .:o] And flicker is certainly most noticeable with a very light screen - which is one of the reasons I always use a neutral grey BG for both Win desktop and Poser. Also, eye fatigue increases with high contrast and brightness. Fluorescent lights do most certainly flicker noticeably here in Europe - so I never use them myself. Only standard lightbulbs, which are 'slow' - they can't cool fast enough to flicker.