I've been trying to install PyGame for Python, and can't seem to get Python to recognize that it's there. I use Python 3.3, and have a 64-bit Windows computer, but that's really all I know. The PyGame website has piles of different versions of the installer, but I can't seem to find the right one. Either they let me install it but then starts spitting errors (basically saying the module doesn't exist, when it does), or I get this sort of set-up program that keeps saying it's not in my "registry".
Pygame only works for 32-bits version of Python, so that's the reason it didn't find your Python installation on the registry.
In the Downloads section, the following can be read:
windows 64bit users note: use the 32bit python with this 32bit pygame.
And I also recommend you to use Python 2.7 for compatibility reasons.
I have successfully used pygame on 64-bit Windows with both Python2.7 and Python3.3.
I used the installers from here: http://www.lfd.uci.edu/~gohlke/pythonlibs/#pygame
Choose the appropriate one to match your Windows and Python versions, in your case: pygame-1.9.2pre.win-amd64-py3.3.exe