I see that 1024 x 768 and 800 x 600 are commonly used - but what units are these in? Pixels? Millimetres?|||The answers above are all good, but your second question was what unit of measurement. They are in pixels.|||it all depends upon how many pixels per inch your monitor or screen is. Depending upon screen size there are llots more cause I use 1680x1050 on a 20" widescreen. Lots of Windows users on 17' screens use 1280x1024|||Standard size of wallpaper to be use in your system depends on what screen resolution you've had. To check this, right click on your desktop, click on properties, go to settings tab and see your current screen resolution and there you can also see that these sizes are in pixels.|||Depends on your monitor and video card.|||Here are Some of the standards:
1280x1024|||pixles per inch...i guess|||I use 1024 x 768 because that's the screen resolution I use.