I am trying to find a free tool which is not VisualSVN(I know VisualSVN integrates with Visual Studio 2003/2005/2008/2010....) that will integrate Sub Version/TortoiseSVN with Visual Studio 2003. There is also another tool that integrates Visual Studio 2005/2008/2010 with SVN, given in the hyperlink here -> http://garrys-brain.blogspot.ca/2007/07/tortoisesvn-and-visual-studio.html but does not integrate with Visual Studio 2003.
Agent SVN is a MS-SCCI Subversion plug-in so it should work with VS 2003.