LinuxQuestions.org - Problems installing NVIDIA driver

Hi,
I have just upgraded from Mandriva 2006 to 2007.1 and wanted to install the NVIDIA drivers with the packages
dkms-nvidia97xx-100.14.11-1plf2007.1
nvidia97xx-100.14.11-1plf2007.1

In xorg.conf I set Driver "nvidia".

When doing startx the Xorg.0.log has the following lines:
(II) Setting vga for screen 0.
(**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
(==) NVIDIA(0): RGB weight 888
(==) NVIDIA(0): Default visual is TrueColor
(==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
(**) NVIDIA(0): Option "AddARGBGLXVisuals"
(**) NVIDIA(0): Enabling RENDER acceleration
(II) NVIDIA(0): Support for GLX with the Damage and Composite X extensions is
(II) NVIDIA(0): enabled.
(EE) NVIDIA(0): Failed to load the NVIDIA kernel module!
(EE) NVIDIA(0): *** Aborting ***
(II) UnloadModule: "nvidia"
(II) UnloadModule: "ramdac"
(II) UnloadModule: "wfb"
(II) UnloadModule: "fb"
(EE) Screen(s) found, but none have a usable configuration.

Fatal server error:
no screens found

Dmesg gives the following output:
ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 17
NVRM: request_mem_region failed for 0M @ 0xf7f3a100. This can
NVRM: occur when a driver such as rivatv is loaded and claims
NVRM: ownership of the device's registers.
nvidia: probe of 0000:01:00.0 failed with error -1
NVRM: The NVIDIA probe routine failed for 1 device(s).
NVRM: None of the NVIDIA graphics adapters were initialized!
ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 17
NVRM: request_mem_region failed for 0M @ 0xf7f3a100. This can
NVRM: occur when a driver such as rivatv is loaded and claims
NVRM: ownership of the device's registers.
nvidia: probe of 0000:01:00.0 failed with error -1
NVRM: The NVIDIA probe routine failed for 1 device(s).
NVRM: None of the NVIDIA graphics adapters were initialized!

I checked several forums but somehow I did not figure out how I can fix the problem.
Can anybody out there give me a hint?

Thanks