Weird happenings after installation 10.6.6

Okay it has been a while since I have attempted an install and just like before I have some issues that I can't seem to find any reference to for guidance, so I am asking for some help from the pros.
Okay first my system specs:

Mobo - Gigabyte M68MT-2
CPU - Athlon II x4 645
Chipset: Geforce 7025 South Bridge - nforce 630a
Memory - Crucial Extreme 8gig
Video - Geforce 210/GT218 1Gig
Audio - Realtek AL887 HD
LAN - Realtek RTL8211CL

Okay I installed retail dmg of Snow Leopard. I updated to 10.6.6 and installed 10.6.6 legacy kernel. Modified my boot.plst file with proper string for video card support. Rebooted and everything seems fine, but once the system boots to desktop I lose functionality with my Ethernet connection even though it shows in finder that it is there? iTunes, kext helper, and kext utility, crash constantly, so no ability to replace kexts. About this MAC shows proper video specs and cpu cores, clock speed, fsb, and memory allocation. No kernel panics at boot or or at desktop, not really sure what is going on, but I am completely lost as to how to fix these issues.
Any help would be appreciated.

Thanks guys

Okay here is what shows up in finder about my system:

nVidia GeForce 210:

Chipset Model: nVidia GeForce 210
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 1024 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0a65
Revision ID: 0x00a2
ROM Revision: nVidia GeForce 210 OpenGL Engine [EFI]
Displays:
Acer S231HL:
Resolution: 1920 x 1080 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Display Connector:
Status: No Display Connected


Model Name: Mac Pro
Model Identifier: MacPro3,1
Processor Name: Quad-Core Intel Xeon
Processor Speed: 3.11 GHz
Number Of Processors: 1
Total Number Of Cores: 4
L2 Cache (per core): 512 KB
Memory: 8 GB
Bus Speed: 800 MHz
Boot ROM Version: MP31.006C.B05
SMC Version (system): 1.30f3
Serial Number (system): SOMESRLNMBR
Hardware UUID: C5E6CA73-2DAF-54FE-BEBD-B484C6E0E0AF

I was going to post the crash log, but it is very long.