Additional:
(sorry for my bad english)
yesterday I opened a chat in the english chatoom. The first supporter was very friendly the whole time.
A short time later the chat was transfered by the first supporter to the technical support chat. The second supporter was very friendly at the beginning while "to verify your account and to review the details of your request". Friendly at the middle of the chat - till the offerte "to start sharing the screen" with Adobe connect. Because I have a new computer, this try failed (no Flash player was installed). I asked the supporter how I can reopen the chat after installing the Flash player ( I thougt this will be need to restart the computer.) But the answer was: " No problem, chat screen will remain there."
And such is life - without an restart Flash player doesn't functionate correctly - no possibility to do something with Adobe connect. And now - a friendly expulsion:
Here is the last part of the chat (I only changed the names to Supporter, Me and Questioner)
Supporter: Are you able to login successfully? (my own supplement: means to login to Adobe connect)
Me: No.
Supporter: Please visit Adobe User Forums at
Me: I installed Flash player and clicked the link you‘ve posted and the message »need flashplayers« remains.
Supporter: https://forums.adobe.com/thread/1253193
Me: ok
Supporter: Is there anything else I may assist you with today? (Remember: my question isn't solved yet)
Me: please wait a minute
Supporter: Ok
Supporter: Questioner, I really apologize for the inconvenience that we do not have any support on this issue. Please follow the instruction from adobe community forums.
Supporter: Please click on the bell oprion.
Me: What means this sentence by JJMack from the forum: Then check you end make sure there is no file „host‘ that is redirect any of Adobe web site names like“
Me: And what is the: bell oprion? Sorry, my english isn‘t the best
Supporter: I am sorry about that statement.
Me: perhaps the flash player is available after a restart of the computer. Can I reopen this chat with you?
Supporter: Sure
Me: How? Perhaps save the link and easy reopen?
Supporter: Questioner, you need to follow the instruction from the above forums links as we do not have any kind of help for this software. (this does not help to reopen the chat!)
Me: Yes I wanna. But please: What means this sentence by jjMack from the forum: Then check you end make sure there is no file „host‘ that is redirect any of Adobe web site names like“
Supporter: I apologize for the inconvenience. (at least)
Supporter: Adobe does not support old software anymore and please upgrade your software to CS 6 or CC version. (And this is the best!!!!!!!!!!!!!! I only want to activate my payed software on a new computer and not to buy another version)
Me: Thank you for spending your time. I‘m worry.
After the chat I installed my standalone version of InDesign CS5. No problems to activating this programm.
One more try to activate the CS3 - no connection.
Finally I copied the hosts.file from my old computer to the new one and tried to activate again - no connection. I was frustrated!
I do not have the windows closed and not shut down the computer. I just went to sleep.
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Today in the morning: the failure message was still open in Photoshop CS3 - I clicked on try again to activate - and one minute later -------> Activation succesful
Without any new changes on my system. This sounds like magic.

Summary:
CS3-programms runs on a Windows 8 computer without problems.
But the activation is a matter of luck!