SVN integration into VS2005 should be no big deal, especially if you use TortoiseSVN. I regularly use this: http://garrys-brain.blogspot.com/2006/11/visual-studio-2005-and-tortoisesvn.htm
We even have SVN integrated with VS2003, using external tools wired up to use the TortoiseSVN command line interface. Those external tools can be placed on the toolbar, and even given a custom icon to match TortoiseSVN if you like.