Installing Python is often a road block to using Igor's scripts, but Python scripts can be compiled into .exe files that run on Windows without Python. I have not used them, but Google for kindlefix.exe and you will find compiled versions. They are usable just like the original Python versions (still on the command line). I suggest putting them in the same directory as your ebook, and then issue the command:
Code:
kindlefix.exe MyBook.mobi V176CXM*FZ
where "V176CXM*FZ" should be replaced by your Kindle's PID (it will also have a "*" in it).