Archived - Apple Magic Mouse: Vertical scrolling and swiping do not work with Microsoft Windows using Boot Camp
When using an Apple Magic Mouse with Microsoft Windows XP or Vista, vertical scrolling and two-finger swiping may not work.
If you are using Mac OS X v10.6 Snow Leopard, download and install the Boot Camp 3.1 Update to enable these functions in Windows.
For computers with Mac OS X v 10.5 Leopard, download and install the Boot Camp 2.2 Update.
Swiping is not a supported feature in Windows.