ok...
found out the following:
take the latest Package from creative website which fits your needs.
Run installer by doubleklick and wait for setup window.
Do NOT go further.
Check now in your temp folder for a new folder called CRF000
Copy that folder (also hidden files!!!)
Go back to the setup window from the setup you started before and cancel it.
Go to CRF000 --> install it using the ISS guide on msfn unattended.
It worked for me.
Be Aware! Only Drivers are installed with that method, not the player or anything else.
But I can even use 7.1 / thx now, without any further software

regards,
Frank