I'm a complete graphics newcomer, so I have only really, really basic questions. I don't need perfect, technical definitions (though a dumbed-down explanation could be helpful). What are the different kinds of AA (TXAA, MSAA, etc)? What's the difference in quality/hardware requirements between them? How much of a difference can it make between the different kinds? I'm sure that I'll have even more questions about your answers, so thanks in advance (you may find yourself frustrated with my lack of knowledge).