install Python for windows extensions , but failed. (no replies)

I try to install Python for windows extensions using the file ' MySQL-python-1.2.3.win32-py2.7.exe'( I downloaded from http://www.codegood.com/), but there is a error message, 'Python version 2.7 required, which was not found in the registry'. In fact, I installed Python 2.7.1 on my computer(windows7, 64bit). I try to input Python directory, but the box is gray(can't input anything).

btw, this is second time to install the program, first time it works fine.

thanks in advance.

sharon