Ok I have a Intellimouse w/intellieye 1.0 that is ps/2 and usb compatible. Now, the download section at microsoft.com just has one for Intellimouse. Nothing else. It says 'Download Intellimouse Software Version 4.1' Or something. If I download and install this, will there be a way, without the original disk that came with the mouse itself, to restore the original mouse drivers? I guess what I'm asking is would there be any adverse effects to any games or programs?