VLC doesn't respect the movie DVD regions - at least this was before 10.5 (haven't tested in 10.5 yet). Set in System PReferences > CDs & DVDs the option for movie DVDs to be ignored by system, then open them manually with VLC.
hi thanks for that suggestion I am new to a mac and have no idea really. I have tried what suggested and a little box came up saying an error has occurred which probably prevented the proper execution of programe main:no suitable access module for file so I must have missed a step any suggestions thanks