Sorry unclear post. I mean that if you are using the mymovies application to manage, scroll through, and ultimately launch both SD movies and HDDVD/BR movies (by clicking on the Watch button from within MyMovies), in order for PDVD8 to launch the HDDVD/BR movie, you cannot be running VMC in full screen mode (maximized). This is because MM sends a command to Daemon tools to launch the HDDVD/BR ISO file. After this occurs, you need Vista's autoplay feature to then take over and launch PDVD8. However, this will not occur if VMC is in full screen mode - but if you enlarge the window you can get it to like 95% of the screen. Whats nice is that if you close out of VMC and reopen it, it will remember the size and position.
Again, this works properly with PDVD7 because the MM author built functionality into the app to handle minimizing VMC and launching PDVD7. He will update the app to handle PDVD8 but like i said, this may be 30-60 days.
Make more sense?