If ever you need to download code from Google Code - or any other web accessible Subversion repository, but don't want the hassle of installing a full SVN client (like TortoiseSVN), you might like to try DownloadSVN.
"A Simple stand-alone EXE utility" that does just what it says on the tin. You point it at the repository URL, give it a target folder on your computer, and it sucks the source down off the web. Just note that it requires .Net 2.0.
But perhaps you have an easier way? Do tell.