Run SvnBridge to use TortoiseSVN or other Subversion clients with Team Foundation Server. This version includes support for TFS 2010. Use the client version if you want to run it on your development machine, or you can use the server version to set it up under IIS.
Note: You don't need to download SvnBridge to use Subversion clients with CodePlex. Every CodePlex project automatically has a Subversion URL (e.g. https://svnbridge.svn.codeplex.com/svn).