well I was succesfully changing VOB files to AVI files by using DVD2AVI.EXE but somehow Audio file and AVI files got separated and so can't listen to the audio while watching the avi file. and I also used trial version of XingMPEG Encorder to put them together then the file was changed to mpeg... it was my first time to use the programme and I don't know where the mpeg file is... I also don't have Panasonic Plugin V2.1 it could be the problem...