Visual Studio 2008是否与SourceSafe集成？

I'm using Visual Studio 2008 Professional Edition. In previous versions, there has been integration with VSS, through which one could "open from SourceSafe" and then, in the solution view, have the ability to interact with the source control by clicking on individual files. I seem to have some integration under 2008, namely there is a "Source Control" menu item under the File menu, but all I can do there is "Launch Microsoft Visual SourceSafe." How do I get the integration that I had in 2005?I'm using Visual Studio 2008 Professional Editi