Flex and CS3 doesn't like Flex and CS4

Hi

I’m working on a project that was created using flex and CS3. I only have access to CS4 and the class paths normally located at:

C:/Documents and Settings/wturrin/Local Settings/Application Data/Adobe/Flash CS3/en/Configuration/Classes

are nowhere to be found. I tried setting up links to the localSettings/Application/Adobe/Flash CS4/enn/configuration/classes and that didn’t work either.

I keep getting a compile-time error around TweenEvent classes.

please help… mind going broke…

mr.wil