How to download/checkout a project from Google Code in Windows?
If you install TortoiseSVN you can use SVN under windows. It also gives you the SVN binaries. You needn't do the checkout from the command-line though as it integrates into Windows Explorer for you.
If you don't want to install anything but do want to download an SVN or GIT repository, then you can use this: http://downloadsvn.codeplex.com/
I have nothing to do with this project, but I just used it now and it saved me a few minutes. Maybe it will help someone.