Long duration is not good as different people absorb the material at different pace.
This is a actually a powerpoint presentation.
But my client wants this on a DVD so anyone can go thru this presentaton on their own pace using a DVD player instead of a PC/laptop (not everyone has a pc in some countries). My first thought was to ask them to just pause and play but depending on the machine, pause might go into a screensaver which is not what he wants.
I have about 40 slides so I will see if I can build a 40 level menu in 3 languages, I will report back later, thanks for the help
Dan,