How can I check if SP1 is installed on my Visual Studio 2010?
I can’t find it in the About screen.

For example in Visual Studio 2005:
On the left I don’t see any service pack, but in the right pane I see SP2 of the framework.
Is it the same? Is there’s a service pack for the framework and another for Visual Studio? Or only one service pack for the framework?
Help->About.The version of the installation will be SP1Rel if SP1 is installed.