The SIXAXIS controller can be used on Windows PC. As is the case with it under Linux, it works as USB HID device that needs special initialization under Windows.
The instruction to make it work properly is as follows:
1. Download and install the filter driver (libusb-win32-filter-bin-0.1.10.1.exe).
2. Unpack ps3sixaxis_en.exe
3. Plug the SIXAXIS into your PC.
4. Run ps3sixaxis_en.exe once.
5. Push the PS button on the SIXAXIS once if it seems to be sleeping.