Install CS4 Production Premium from Design Premium CS3, but does not recognize CS serial number

Question

Try almost half day already but still do not know how to overcome the problem.
My operation system is Windows XP SP3.
I am installing Production Premium CS4 and it is an update version from Design Premium CS3. I tried to input my CS3 serial number in when it is needed, but it always gave me "Invalid Serial Number". I tried to install the Design Premium CS3 to the computer. The serial number is right and programs work fine. Then I tried to install the CS4 again. First, it cannot find my CS3 just installed before. Second, the serial number for CS3 still does not work. Any idea?
I saw so many people posted the installation issues here. How come Adobe does not do anything to improve the product. I also called the customer support. After waiting 10 min, a guy asked my ID and then total silent. I called again and this time, I had to wait 20 min. Another guy told me this is tech issue so I need to call tech support. He gave me a 1-800 number but I tried, the number is invalid. I have been thought Adobe is a good company before. I really need to rethink that.

Answer 1

Thanks, Bob. Indeed, it was my typo in the message (not CS, should be CS3). My purchase was right (I even discussed with Adobe Store person before I placed the order). I have Design Premium CS3 and the updates I brought is the one which can update from Design Premium CS3. Actually in the menu where I can input my CS3 serial number, it has several options and one of them is exactly Design Premium CS3. See this page: http://www.adobe.com/products/creativesuite/production/upgrade/ (I ordered the 2nd option. I ordered from a vendor which charged me $579).