Console Application Riddle

Question

I have read that a static method is one which can be called from from anywhere in the solution without instantiating the class containing the method. So here's my question - 

W/ A Console Application - Why does the program entry point of execution, i.e. static main (), have to be static. That method generally lies within the 'Program Class' which, in a common sense way is never instantiated in an object sense. So why the necessity for static in 'static main()'.???

Also, It is possible to have the 'static main()' inside of a class which is not static, so doesn't that go against convention? i.e. static methods have to go inside static classes????

thanks Gents, 
Frank