Sounds like the right place.
This sounds like you may have an inadequate video card that doesn't have enough RAM which is highly unlikely unless you're using a very old video card. Therefore, I'd be looking to upgrade/update the video card's drivers (I don't know what you have so you'll have to ask that in another thread).
If you're sure you have the best and most current drivers then you may want to adjust your driver settings to allow you to see all the resolutions that your card may support - not just the resolutions that your driver thinks your monitor is capable of. (I might be able to help there too if I knew what OS and card you had.)
Of course, the simplest thing might be to just get a better monitor cable. If you use VGA (which I don't recommend) and your VGA connection is only using 3 or 4 lines (connections) then it's almost a certainty that your card can't properly detect your monitor. This is almost always a problem when a KVM switch is used too. But if you're using a DVI cable then you should be OK. HDMI is also usually acceptable and able to provide monitor info back to the card although you may have troubles with audio.
So if you want to provide more info about your system maybe someone can help better. (Sorry if that's not much help.)