Yesterday downloaded Zephyroth Leopard 10.5.2 release.
First tried default nvidia drivers from dvd. After fixing boot leopard started. Resolution was 1024x768. Cant start leo with 1680x1050.
Reinstalled without graphic drivers. Then installed NVInstallerV.33. After finishing install system stoped working, some times with shut down message others just hanged.
Rebooted and got kernel panic in GeForce.kext and NVDAResman.kext. Then booted in safe mod and got normal resolution: 1680x1050. Then fixed kexts leaving just my video card id (motherboard M2N-E with nForce 570 chipset). But nothing have changed. Can't boot in normal mode.
Same thing with my old one 7800GT video card.

When installed added option for nforce 5 support, no other drivers. Sound installed with own azalia drivers, have optional realtek network card, which works natively.

Graphics by NVIDIA:

Chipset Model: Graphics by NVIDIA
Type: Display
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 256 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0402
Revision ID: 0x00a1
ROM Revision: NVinject 0.2.1
Displays:
Display Connector:
Status: No display connected
L204WT:
Resolution: 1680 x 1050 @ 60 Hz
Depth: 32-bit Color
Core Image: Software
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Not Supported

Here is info about graphics in safe mode.

My system configuration:
AMD Athlon X2 3800+
Asus M2N-E
Asus 8600GT silent 256MB or Asus 7800GT 256MB
geil 2x1024 MB ddr2 800
HDD 80GB samsung

Sorry for my bad english
If you don't understand somethin or need more info, plz tell me.