Microsoft Win32 to Microsoft .NET Framework API Map

In this article, the Microsoft® Win32® functions are organized by category. Each Win32 function that is listed belongs to only one category, and each category is presented in its own table. An alphabetical list of the Win32 categories is provided, as well as a hierarchical list. To locate a Win32 function, select the appropriate category from one of the category lists or search the article for the name of the function. If you do not find the Win32 function that you are seeking, it means that no equivalent .NET Framework API exists in the .NET Framework version 1.0 or 1.1 or that the Win32 function and the relevant .NET Framework API were inadvertently omitted from the list.
more info:
http://msdn.microsoft.com/en-us/library/aa302340.aspx

Controlling The Screen Saver With C# (Win32)

Presented here is a C# class useful for monitoring and controlling the Windows screen saver. The class provides methods for getting information about the screen saver, such as whether or not it is active, it is running, and its time out setting. Additional methods are provided to change these settings and to terminate the screen saver if it is running.

More info see the below link:
http://www.codeproject.com/KB/cs/ScreenSaverControl.aspx

How to use send keys and more info.

http://msdn.microsoft.com/en-us/library/8c6yea83(VS.85).aspx

Very useful links for Automation using c#

http://msdn.microsoft.com/en-us/magazine/cc163288.aspx
http://www.scip.be/index.php?Page=ArticlesNET20