I had some extra spare time and decided to whip up a quick windows port. It’s fairly rough, but it does the job and seems to work.
It has only been tested on Windows 7 64-bit, but it’s compiled as 32-bit code, against XP-compatible WinUSB drivers so it should work on any windows version nvflash works on!
I have included reflash_sbkv1.bat and reflash_sbkv2.bat files -- Be aware that these don’t verify that you have placed files correctly like the linux version, so doublecheck before running anything!
Keep in mind this is beta -- and that I’ll be going on holiday so don’t expect any support 
Url: Wheelie.zip
Note this requires APX-mode drivers, which are NOT included (partly due to size, partly due to legal issues). I’m sure you can find these on your favourite forum! If not, they are in the Nvidia Android 4.0 pack for Ventana from Nvidia’s site!