Q:

How to use PyPy on Windows?

I was wondering how to use PyPy 1.8 on Windows XP 32-bit. I downloaded the zip file off the website and installed it into a My Documents file. Initially, I thought it was similar to psyco in that I had to "import psyco," but I found that PyPy.exe acted like the Python command line instead.
I tried dragging my scripts into the PyPy.exe to run them, but it didn't seem to work at all. Attempting to use the "python" command within PyPy yielded a "global name 'python' is not defined." 
So I was hoping if someone can assist me in making PyPy run because I'm pretty much out of ideas. The documentation on the PyPy website confused me mainly and was not very helpful. 
Ans: I found that I could simply right-click the script and "Open with" Pypy.exe to make it work. Not sure why it didn't work with the drag since I thought that was equivalent. Thanks everyone. 

A:

I'm a noob and was totally confused as well so here's what I did in case it helps someone. I guess this is so basic that pypy doesn't mention it. 

Download the appropriate file based on your OS: http://pypy.org/download.html
unzip/uncompress/unpack/extract to any directory
eg: C:\ 
navigate to the directory in windows explorer and copy the path, 
eg: C:\pypy-2.5.0-win32
control panel>system>advanced system settings>environment variables
in the first box, select PATH
click edit
You'll see a bunch of paths. Don't alter any of them. Move the cursor to the very end.
type a semicolon: ;
paste your path after the semicolon you just added to the end of the long list of paths
eg: ;C:\pypy-2.5.0-win32

Note! The command will be the filename of the launcher name -.exe If
  your launcher is pypy3.exe, then the command will be pypy3.
If the filename is python.exe, then your command will be python and so on.
For pypy3 the default launcher is pypy3.exe

close all the system setting boxes and exit shell if it's open
open shell
navigate to directory where your .py file is located
type: pypy filename.py

Now you can run your code with pypy instead of python. 

A:

Maybe I'm not following what you're trying to do, but isn't it just a question of opening a command prompt and running pypy myscriptname ?  Assuming you've got all the paths for PyPy and your script straight, anyway (e.g. your script's in PyPy's folder).

