newbie question for C#.net

Since I am new to c#.net 2008 but I have worked a little with visual basic.net 2005, I have the following questions I would like to ask:
1. When I am looking at a .sln file that I will be maintaining a work, I can see there are lots of static void Main() methods in a file called program.cs throughout the solution in separate folderts. Can you tell me the purpose of this kind of code? Does this instantiate an object, is this a class libary member?
2. When running the C#.net 2008 professional version windows application, how do I know which 'main' method is being called?
3. When looking at this sln, I would like to determine all the different ways to run this .sln application there are. To do this would I look at the different ways there are to run the application (release, debug, configuation mange), would I use the object explorer? How would you recommend I learn how this .sln is executed

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PJ Martins16y ago
You can set which project to be the main project by right clicking on the project and select "Set As Startup Project". To determine which Main() method will be called, go to the project's properties and see what the Startup object is set to under the Application settings. Whichever object it is set to will be the one who's Main() function will get called.