BEWARE!!!!!!!!!!!!!!
I had CS3 extended and bought a upgrade to CS4. The extended version was no longer in mine need and to expensive so I paid 199 euro for the CS4.
I have tried for hours and hours in combination with the Adobe support and Technical help to activate CS4 without any succes. I can no longer use CS4 anymore after the help from the Adobe support.
THe solution from Adobe is that I ask for a refund and that I buy the CS4 extended version. Upgrade is 475 euro!!!!!!!!!!!!!!
Or that I send in a request for the refund and that I wait until CS4 can be deliver on a CDrom. That can be a lot of weeks after now.
Very nice policy from Adobe.