Well since you haven't told us any details I can only guess you'e using windows right? I know for Roxio Easy CD/DVD it requires either mpeg1/2, or AVI. For Nero yo have to either have purchased the most recent version or purchase the xtras plug-ins to convert mp2. For any other format I'd suggest you check out the following website links: http://forum.dvd-guides.com/ & also check out this: http://www.google.com.au/search?hl=e...e+Search&meta=