The previous reviewer clearly has no proper experience of using this program. I have used cs2 3 4 and 5. CS4 was a great improvement and the interactive document capabilities of cs5 are fantastic. Check out adobe TV if you want to find out what this software can do for you.
This is one of those pieces of software that have been introduced simply to protect Adobe's turnover. It does nothing for the user except to give him what was in CS3 plus some bells and whistles that it is difficult to find a use for. Worse than that, some of CS3's best features have been made so complicated that they have become all but impossible to either understand or use. My advice is to stick to CS3 (or whatever you are using) and leave this one for the birds.