Solely because Serif don't write for Mac, I created a Bootcamp partition and installed Windows x32 and enjoyed full functionality of the Magic Mouse. However, I subsequently realised the partition was too small at just 32GB, and it only gave me 3GB of RAM for some reason, despite this being an 8GB device. So, I deleted the partition, and created a new even-share partition, installing Windows x64 instead. Now my Magic Mouse doesn't scroll, either up / down or left / right. To aim to remedy this problem, I: 1. Re-installed AppleWirelessMouse64.exe. That didn't make any difference. 2. Installed AppleWirelessMouse645.exe. That didn't appear to change anything either. 3. Installed the Sidewinder x8 driver from Microsoft, IPx64_1033_7.10.344.0.exe. And that also didn't work. I restarted the PC after these installations and that didn't make any difference. So I'm stuck with a very nice mouse in Mac that's a very mediocre mouse in Windows. I am hoping some nice clever person has found a workaround that they're willing to share here. Many thanks in advance.