ZSNES board

I don't have enough knowledge about computer science. Sorry if my questions are too simple to you.
What is SVN? Which is better, ZSNES WIP and ZSNES from SVN? How to download and using ZSNES SVN?

Deathlike, I have Intel Celeron 1GHz, 256 RAM, Max resolution 1024x768, Direct X 9.0, refresh rate 60hz, Windows XP service pack 2. What Zsnes setting which you recomended to me?

Which is better, windowed mode or full screen mode? What mode which use more less % of CPU?

Ok, thanks a lot for the answer. Also thanks to the Zsnes team and the contributers which have bring back my old snes.
Now I can play Chrono Trigger in my computer

So, Is it will more safe if I enable vsync and triple buffering than dissable them?

First, I'm sorry if my english not good. But I wish you can understand. I really have a less knowledge about computer. There is some question I hope you would like to answer it. 1. could zsnes damage my monitor? I always wanna know this. 2. If the answer is yes, what setting of zsnes which is best a...