heres my dxdiag so you can compare , mines a 2500+ Mbarton overclocked to 2.4  on a asus a7n8x-e dlx mainboard ,and a 9600 pro card , Water cooled .
I dont remember if ive got the  4.27 international Nforce drivers on it  or the set befor that ...   but which ever it is it works like a swiss watch in Aces High .
I run the Hires pack and 1024 textures.
you may not have cleaned out the drivers good enough befor the 4.12's went in ... or have something going on with the Nforce drivers thats causing the crash.
System Information
------------------
Time of this report: 1/31/2007, 21:22:06
       Machine name: XXXXXXXX  <-- not safe for work
   Operating System: Windows 2000 Professional (5.0, Build 2195) Service Pack 3
           Language: English (Regional Setting: English)
System Manufacturer: ASUSTeK Computer INC.
       System Model: A7N8X-E
               BIOS: Phoenix-Award BIOS v6.00PG
          Processor: AMD Athlon(tm) XP, ~2.4GHz
             Memory: 1024MB RAM
          Page File: 229MB used, 2233MB available
        Windows Dir: C:\WINNT
    DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
     DxDiag Version: 5.03.0001.0904 32bit Unicode
------------
DxDiag Notes
------------
  DirectX Files Tab: No problems found.
      Display Tab 1: No problems found.
        Sound Tab 1: No problems found.
          Music Tab: No problems found.
          Input Tab: No problems found.
        Network Tab: No problems found.
---------------
Display Devices
---------------
        Card name: FIC A96P RADEON 9600 PRO 128M (Omega 2.5.22)
     Manufacturer: ATI Technologies Inc. (Omega 2.5.22)
        Chip type: RADEON 9600 Series AGP (0x4150)
         DAC type: Internal DAC(400MHz)
       Device Key: Enum\PCI\VEN_1002&DEV_4150&SUBSYS_9A201509&REV_00
   Display Memory: 128.0 MB
     Current Mode: 1024 x 768 (32 bit) (85Hz)
          Monitor: Plug and Play Monitor
  Monitor Max Res: 1600,1200
      Driver Name: ati2dvag.dll
   Driver Version: 6.14.0010.6422 (English)
      DDI Version: 9 (or higher)
Driver Attributes: Final Retail
 Driver Date/Size: 1/27/2004 16:57:28, 387584 bytes
      WHQL Logo'd: n/a
  WHQL Date Stamp: n/a
              VDD: n/a
         Mini VDD: ati2mtag.sys
    Mini VDD Date: 2/12/2004 16:01:56, 669696 bytes
Device Identifier: {D7B71EE2-0210-11CF-AF6F-2ABAA1C2CB35}
        Vendor ID: 0x1002
        Device ID: 0x4150
        SubSys ID: 0x9A201509
      Revision ID: 0x0000
      Revision ID: 0x0000
      Video Accel: ModeMPEG2_C ModeMPEG2_D 
 Deinterlace Caps: {6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=DeinterlaceTech_PixelAdaptive 
                   {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=DeinterlaceTech_BOBVerticalStretch 
                   {6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,1) Caps=DeinterlaceTech_PixelAdaptive 
                   {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,0) Caps=DeinterlaceTech_BOBVerticalStretch 
                   {6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(YV12,0x32315659) Frames(Prev/Fwd/Back)=(0,0,1) Caps=DeinterlaceTech_PixelAdaptive 
                   {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YV12,0x32315659) Frames(Prev/Fwd/Back)=(0,0,0) Caps=DeinterlaceTech_BOBVerticalStretch 
                   {6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,1) Caps=DeinterlaceTech_PixelAdaptive 
                   {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=DeinterlaceTech_BOBVerticalStretch 
         Registry: OK
     DDraw Status: Enabled
       D3D Status: Enabled
       AGP Status: Enabled
DDraw Test Result: Not run
 D3D7 Test Result: Not run
 D3D8 Test Result: Not run
 D3D9 Test Result: Not run
-------------
Sound Devices
-------------
            Description: NVIDIA(R) nForce(TM) Audio
 Default Sound Playback: Yes
 Default Voice Playback: Yes
            Hardware ID: NFORCE_VAD
        Manufacturer ID: 1
             Product ID: 100
                   Type: WDM
            Driver Name: nvapu.sys
         Driver Version: 6.14.0362.0000 (English)
      Driver Attributes: Final Retail
            WHQL Logo'd: n/a
          Date and Size: 8/12/2003 17:45:00, 311552 bytes
            Other Files: 
        Driver Provider: NVIDIA Corporation
         HW Accel Level: Full
              Cap Flags: 0x0
    Min/Max Sample Rate: 0, 0
Static/Strm HW Mix Bufs: 0, 0
 Static/Strm HW 3D Bufs: 0, 0
              HW Memory: 0
       Voice Management: No
 EAX(tm) 2.0 Listen/Src: Yes, Yes
   I3DL2(tm) Listen/Src: Yes, Yes
Sensaura(tm) ZoomFX(tm): No
               Registry: OK
      Sound Test Result: Not run
---------------------
Sound Capture Devices
---------------------
            Description: NVIDIA(R) nForce(TM) Audio
  Default Sound Capture: Yes
  Default Voice Capture: Yes
            Driver Name: nvapu.sys
         Driver Version: 6.14.0362.0000 (English)
      Driver Attributes: Final Retail
          Date and Size: 8/12/2003 17:45:00, 311552 bytes
              Cap Flags: 0x0
           Format Flags: 0x0