Hello, I have 3188 loaded on my Mac Pro. I am using a MS Wireless IntelliMouse Explorer 2.0. When in Windows, the back and forward buttons (normally used in IE to navigate back or forward a page) don't work. Instead, the back and forward buttons open up the Windows Start menu. Is there any way to program these back and forward buttons?
Try going to www.microsoft.com/mouse and downloading and installing the drivers for your Mac (and also Windows if you didn't do that yet)... not sure this will work inside Parallels, but it's worth a shot... if nothing else it will help those functions to work in OS X.