Which Version Of Handbrake Should I download for Windows?

I got an iPod touch for xmas last year, and i want to convert my DVDs so i can put them on my iPod instead of having to pay 7.99 for a movie that i already have. So I came across a program called Handbrake. I use Windows Vista Basic. When you go on the handbrake website and go to the page called download it gives you a bunch of options. Theres one called Windows2000/XP/Vista, then under that there is 2 more options for windows. They are: “GUI”, and “Command Line Interface”. I downloaded the first one, GUI. It downloaded fine and i converted my DVD Alice in wonderland and put it on my iPod touch. Im pretty sure i did everything right in converting it because i used a tutorial. But when i watched (or attempted) to watch the movie it was all blotchy(like when you are watching satalite during a storm, like pixelly). And the sound cuts off nonstop. I think the reason it isnt working is either I downloaded the wrong version of handbrake for windows or i did something wrong in converting it. Please help!!!