I want to know how you can turn off widescreen on an LG Flatron W2246.
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I'm pretty sure that model has the "4:3 in Wide" mode. If engaged, it stretches 4:3 resolutions to fit the 16:10 screen.
To toggle it, it will either just be a button on the front panel, or you may have to set it using the buttons and the On-Screen Display menu of the monitor.