I\'m new to Python. According to the internets I was looking for the module pyserial after receiving this error:
ImportError: No module named serial
As a slight update there is still the problem that python 64bit for Windows is not compatible with the pyserial installer.
What is not mentioned in other answers but I found very useful to know is that Python 32 bit installs and works fine on Win7 64bit and that means the pyserial installer also works fine.
Obviously if you need 64bit python this is no use to you, but I suspect most of us do not.