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Robert.... I will take a stab at this but I am sure someone will correct me if I am wrong... THis is a real simple explanation of a technical subject,,,, A multisync monitor like what you have on your desk is able to create display of based on the frequency (SCAN rate of the guns in the back of the monitor) that it receives from the video card. There is something called dot pitch on these monitors that represents the sharpest image that a monitor can have (it is acutally a mask with holes in it from what I understand). I do not remember the exact formula but suficet it to say the lower the dot pitch the sharper the image will be in hi-resolution On a LCD panel the number of pixels are fixed at some resolution like 800x600 because the LCD does not have the ability to change the resolution by changing the frequency/scan rate. The way they fake it out is to only display 640x480 pixels on a 800x600 screen right in the middle. THis has nothing to do with SCAN rate just physical pixles lit up by the video card. The vertical expansion tries to calculate the corrct pixel combination and display them on the full 800x600 screen this is what leads to the distortion. It is simple and as any one would attext I have left a lot out but I thingk it may give you a good idea...... Gary ---------- From: Robert J. Karp[SMTP:rkarp@itis.com] Sent: Wednesday, October 16, 1996 6:52 PM To: ThinkPad Users Group Subject: ThinkPad 760 Screen Expansion Does anyone know of a utility that will expand a 640x840 image on the ThinkPad 12.1" 800x600 TFT display without distortion? As you know, a screen expansion option is included within the ThinkPad Features program but it produces noticable distortion both within and without Windows95. It would be nice to be able to truly operate in 640x480 resolution as there are plenty of multimedia applications that will run only in 640x480 256-color mode (a sort of de facto standard, if you will). Anyone understand why the LCD cannot handle 640x480 resolution in full-screen?