How come, every now and then, I don't get the configuration setting for disabling the detection of the center scroll wheel? I never use it and the sudden jumping of the screen that happens on occasion confuses me and it because of this center scroll wheel. I've looked in the mouse settings in the control panel and the option for disabling the detection of the scroll wheel isn't there. Before my i7-2600K processor upgrade, I had that option and I gladly disabled it. Why doesn't this option always show up and how do I get it to appear? The drivers won't update as I get "couldn't find any better driver than is already installed" or the like when I do. It's a Microsoft brand mouse. I'm using Windows XP Pro SP3, fully updated.