Resolution implies how much information is in a given frame of an image being projected. Obviously, the higher the numbers, the higher the quality of the image. However, whether a signal is interlaced or not, can also play a role in the quality of the image, despite ìthe numbersî. If youíre using a signal source of, say, 1024 x 768 (XGA in PC talk), what youíre actually displaying, is an image comprised of 1024 pixels or ìbitsî of information across each line, by 768 total lines of information. Thatís a lot of info! Interlacing vs non-interlacing affects how many times a second that video image refreshes itself (vertical frame rate). When a signal is of the non-interlaced variety, you will have all lines of a given frame drawn every 60^th of a second for a 60 hertz vertical refresh rate (or scan rate). An interlaced signal, at the same vertical scan rate will only give you an odd field (all the odd lines), followed by an even field every 60^th of a second, for a total frame rate of every 30^th of a second. This results in motion artifacts that donít show up on non-interlaced, or progressively scanned signals, due to the fact that the even and odd lines arenít synced or timed exactly right ñ theyíre all a 60^th of a second off from each other. Progressive scanned signals, which scan each line, one after the other in sequence, donít suffer from this slight misalignment, so the motion video is always seamless.