Well I would suggest you dump anything Pinnacle and go for Sonic MyDVD or Ulead MovieFactory 4
I have tried Pinnacle 9 but found it was too slow and also the sound sync was out by about 1 second.
Sonic MyDVD8 from: click here
I have Sonic MyDVD 5.3 and have no problems with it.
I have Ulead Moviefactory 4 but looks like version 5 is now available.
Moviefactory 4 is available from Amazon. Cost me £30 but seems now down to £19. click here