Team Foundation Power Tools adds integration for TFS into the windows shell. If you have installed the TFS PowerTools package and you cannot see it, it is because Windows Shell integration is not selected by default and you need to select it.
Once you have TFS windows shell integration you can interact with TFS’s source control directly from windows explorer:
The green arrow symbolizes a folder that is under TFS Source Control
Options available from windows context menu for a folder under TFS control.