Very glad to help!
My card is an 8800 Geforce but apparently nVidia offers a so-called Unified Driver for all Cuda compliant cards. The driver is the latest from nVidia, called:
178.24_geforce_winvista_32bit_english_whql.exe.
It (and other nVidia drivers) can be found at:
http://www.nvidia.com/Download/index.aspx?lang=en-us
Once installed, the Power Director program can be started, the Preferences chosen under the Edit Menu, and the box checked to enable CUDA GPU Acceleration.
The very disappointing news I have discovered is that the new Cuda upgrade only offers acceleration for certain, non-useful filters. I can't think of a time when I ever deliberately wanted to blur an image or make a kaleidiscope.
I would have REALLY appreciated a way to speed up rendering..........!!!
Hope these instructions prove useful to others.
Sony, Nero, and other professional NLE vendors provide Release Notes to give the user a hint of how to install these updates. Maybe someday Cyberlink will get a clue..... Their ReadMe is old and unrelated to this update entirely.
Larry