I downloaded and installed iSpring Pro the other day from giveawayoftheday.com. It is supposed to handle ALL of
PowerPoint 2007's transitions and animation effects by changing everything to a Flash presentation. I haven't tried it
yet with PPT 2007. You might want to look at it. Everything is packaged complete with a viewer/presenter so you can
get away from Microsoft's Pack-and-Go weaknesses / nonsense.
Your answer may be to do that OR -as suggested- do a pack-and-go with the PowerPoint 2007 viewer as part of the pack so
that you preserve all of the animations and transitions.