It's Windows that is limiting your options. It will only show resolutions that your video card and monitor both support. So if you have a standard CRT monitor and are looking at a widescreen LCD, you're not going to see a widescreen resolution listed. If the possible resolutions for your current setup exceed 1440x900, 1600x1200 for example, then you shouldn't have a problem.
LCD monitors are a bit different from CRTs, in that they have fixed native resolutions. 1440x900 is the maximum resolution for that monitor, but it would be able to support lower ones. Just not as finely grained as CRTs. I have a 20.1" LCD, and it's native resolutions are something like 1600x1200, 1200x1024, 1024x768, 800x600, and 640x480. Those are the only resolutions it can scale to the entire screen. It might be able to do other resolutions, but they will likely involve a black border around the display.
My CRT monitor turns to a yellow color so I decided to buy a new LCD monitor. Thing is that the one I want has a native resolution of 1440x900. On my PC under Display Properties that's not one of the resolutions available. I've read that it's best to use an LCD monitor at it's native resolution.
I was told by customer support that it's my graphics card (pretty old) that doesn't support the resolution and that I should get a new one. But I've also been told that the reason that particular resolution doesn't show up is because my current monitor doesn't support it but when I buy the new one LCD monitor that 1440x900 resolution will be available?
So anyone know which is it? It's weird because with this monitor it goes upwards of 1440x900.