why create a C# program if it only run on a computer with .Net framework only

i dont like the sound of that because i just dont understand. I mean what is the point of creating programs with c# when they only run on my computer and others with .Net framework. What if i wanted to write a program for my client, that will help my clients, but they dont have .net framework?...

hi guys i am new here and i just need some help on something...i have a running c.sharp application on my computer(comput er A). This computer has the whole visual studio 2008 and .Net environment. I finished creating a program but now i want to run the program on another computer(comput er B). This other computer does not have any Visual studio or .Net framework...jow do i run my program on another computer(comput er B) that does not have any programming...