25 to 24 fps conversion (with markers)

Is there a way to make a conversion from 25 fps to 24 fps into Cubase ?
I did a Cubase project with cycle markers for each music cue to establish my cue sheet. Ok… but then I realized that the film comes from a DVD running 4% faster than the 24 fps version.
What can I do to convert my cubase project (the marker track following the new length of the video) ?