Visual Studio 2005 includes the ability to easily switch between source control providers. This is better than the 2003 version that required a 3rd party plugin to change that setting.
To configure this option, Go to Tools \ Options and then choose Source Control \ Plug-in Selection:
Select the Source control plugin that you are planning to use. For instance, if we selected Visual SourceSafe, we would then have extra options under the Source Control section, as seen in the next screenshot:
You can set a variety of other settings from this screen. The settings will be specific to the source control provider you are using.