How do you design a 2D mmorpg?

Answer 1

you can use Direct X or OpenGL to do that

but I recommend OpenGL .. it's open source , tons of lessons and examples

but Microsoft is working with DirectX

ref.s :

http://nehe.gamedev.net/

http://www.gamedev.net/

Answer 2

I suggest you get a college degree in electronics. By then your question should be answered.