I downloaded "Total Video Converter" and I can't get it to convert the video files from my DVD into a common format such as WMV, MPEG, or AVI, or into sound such as MP3 or WMA, which it says it can do.

I'm not sure what the problem is. Thte files are in a form called ".IFO" which I could only get to play on InterVideo WinDVD, and nothing else.

I'm trying to convert it so I can upload (part) of it on to YouTube, but nothing is working. So, any advice is greatly appreciated.

yes it does, download the latest version then choose required plugins.