Since you alreday ripped the DVD with decrypter, you alreday have the VOB (video object bodies) files on your PC. I believe your PC came with MS Movie Maker alreday installed. If you know which VOB files you need just import the into Movie Maker and edit. If you do not know which VOBs contain the footage you need, rename the VOBs with .mpg or .mpeg as VOBS are mpeg2 files. Once you have renamed the VOBs, they will play in any DVD sofware playing program on your PC. again, choose what you need, edit in Movie Maker. When finished, render to a new file as an MPEG2. This way you won't be recompressing. Keep in mind that if you add any transitions , titles or anything else, you will have to render.