[Python.NET] Getting started with Python for .NET

[Anneka Boccio]

I'm completely new to Python for .Net, and I actually have very little
experience with Python and no experience with C#.  So please forgive me if my
question seems very basic.

I'm using Python 2.7.3, and I downloaded
pythonnet-2.0-alpha2-clr2.0_131_py27_UCS2 and unzipped it into a folder named
pyfornet_test, which also contains the dll I'm trying to use (called
DotNet4Class.dll)

Then I run this:
import sys
import os
import clr
sys.path.append(r"C:\pyfornet_test")
clr.AddReference("DotNet4Class.dll")

Which gives me this error:
System.IO.FileNotFoundException: Unable to find assembly 'DotNet4Class.dll'.
   at Python.Runtime.CLRModule.AddReference(String name) in
C:\Users\Barton\Documents\Visual Studio 2008\Projects\PyShar
p\trunk\pythonnet\src\runtime\moduleobject.cs:line 375


Any advice would be much appreciated. Thank you!