Thank you everybody!
The 4620-driver did it! So it is a driver-bug, because when I did all the recommended things (the missing link and so on) the GLX-Modul was started with the originall latest NVIDIA-driver, but didn´t work!
With the 4620 I have 1200fps on my old machine (AthlonXP1,6GH, Viper 770).
Thank´s and bye