If you are using a Samsung SyncMaster and have an image that looks taller than it is wider, you can adjust the image!
Use the front panel buttons to adjust what’s called “Coarse” … it will let you widen the image. You can then adjust H-Position to center it back on the screen.
We’ve found that a Coarse setting of 860, and an H-Position setting of 73 works best for us.