FSX - Odd Artifact Displaying in Full Screen Mode

[MaxArk68]

Does anyone have any idea what this is, and how to get rid of it? Since I don't know what it is, I can't Gogle a solution.

I have just recently discovered this anomaly, and it's only of full screen view that I get it. I'm referring to the two white vertical lines with a green chunk in the centre of them, with blocked letters SL at the left of the full display.

Click Here To See Image (Wasn't able to post imagefor some reason.)

The green chunk between the two vertical bars will expand up and down with screen activity. It's almost like a diagnostic tool?

This is a 3 x 23" monitor display, set up in Nvidia surround mode using 2x GeForce GTX560 Ti in SLI. Latest drivers, 301.42. I'm not sure if it's an FSX thing, or a hardware issue, or a driver issue.