Hi all,
I am way behind the power curve on technology. I built this rig back in '08. Have not done anything to it since. I would like to be able to increase the graphics level in game as much as possible. I understand the GeForce 8600 GTS video card can be used in an SLI configuration, will adding another card help or should I look at something new? I have a cheap monitor filling in at the moment as my last burned out, what would you guys recommend as a good replacement monitor? What about the OS, are there any advantages to upgrading from XP 32 Pro?  I hear people talking about overclocking, but do not understand much about it other than I believe it increases temps and shortens the life of the component, do the benefits outweigh the costs? Any other general recommendations are welcome as well. Thanks for any suggestions you can offer.
Intel BOXD975BX2KR LGA 775 Intel 975X ATX Motherboard
Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz   
NVIDIA GeForce 8600 GTS video card 
SB X-Fi xtremegamer sound card
Ballistix Tracer 240 pin DIMM (with LEDs), DDR2 PC2 5300 memory module BL2KIT12864AL663 2 X 2 GBs 
Windows XP PRO with SP2C OEM OS
Ultra X-Connect 500-Watt ATX Dual 80MM Fan Titanium-Black UV Clear Sides Modular Power Supply
Seagate Barracuda 7200.10 ST3250310AS 250GB 700 RPM SATA 3.0 Gb/s Hard Drive
DxDiag just in case
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System Information
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Time of this report: 8/1/2012, 13:46:35
       Machine name: B-741A7767D27E4
   Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.120504-1619)
           Language: English (Regional Setting: English)
System Manufacturer: INTEL_
       System Model: D975XBX2
               BIOS: Default System BIOS
          Processor: Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz (2 CPUs)
             Memory: 2046MB RAM
          Page File: 809MB used, 3128MB available
        Windows Dir: C:\WINDOWS
    DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
     DxDiag Version: 5.03.2600.5512 32bit Unicode
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DxDiag Notes
------------
  DirectX Files Tab: No problems found.
      Display Tab 1: No problems found.
        Sound Tab 1: The file ctaud2k.sys is not digitally signed, which means that it has not been tested by Microsoft's Windows Hardware Quality Labs (WHQL).  You may be able to get a WHQL logo'd driver from the hardware manufacturer.
          Music Tab: No problems found.
          Input Tab: No problems found.
        Network Tab: No problems found.
--------------------
DirectX Debug Levels
--------------------
Direct3D:    0/4 (n/a)
DirectDraw:  0/4 (retail)
DirectInput: 0/5 (n/a)
DirectMusic: 0/5 (n/a)
DirectPlay:  0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow:  0/6 (retail)
---------------
Display Devices
---------------
        Card name: NVIDIA GeForce 8600 GTS
     Manufacturer: NVIDIA
        Chip type: GeForce 8600 GTS
         DAC type: Integrated RAMDAC
       Device Key: Enum\PCI\VEN_10DE&DEV_0400&SUBSYS_C7733842&REV_A1
   Display Memory: 512.0 MB
     Current Mode: 1366 x 768 (32 bit) (60Hz)
          Monitor: Plug and Play Monitor
  Monitor Max Res: 1600,1200
      Driver Name: nv4_disp.dll
   Driver Version: 6.14.0011.5827 (English)
      DDI Version: 9 (or higher)
Driver Attributes: Final Retail
 Driver Date/Size: 5/11/2007 06:03:00, 5421312 bytes
      WHQL Logo'd: Yes
  WHQL Date Stamp: n/a
              VDD: n/a
         Mini VDD: nv4_mini.sys
    Mini VDD Date: 5/11/2007 06:03:00, 6738432 bytes
Device Identifier: {D7B71E3E-4740-11CF-314D-78E700C2CB35}
        Vendor ID: 0x10DE
        Device ID: 0x0400
        SubSys ID: 0xC7733842
      Revision ID: 0x00A1
      Revision ID: 0x00A1
      Video Accel: ModeMPEG2_A ModeMPEG2_B ModeMPEG2_C ModeMPEG2_D 
 Deinterlace Caps: {6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive 
                   {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt retch 
                   {6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive 
                   {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt retch 
                   {6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(YV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive 
                   {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt retch 
                   {6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive 
                   {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt retch 
         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: SB X-Fi Audio [1000]
 Default Sound Playback: Yes
 Default Voice Playback: Yes
            Hardware ID: PCI\VEN_1102&DEV_0005&SUBSYS_00311102&REV_00
        Manufacturer ID: 1
             Product ID: 100
                   Type: WDM
            Driver Name: ctaud2k.sys
         Driver Version: 6.00.0001.1375 (English)
      Driver Attributes: Final Retail
            WHQL Logo'd: No
          Date and Size: 5/5/2010 21:24:24, 526296 bytes
            Other Files: 
        Driver Provider: Creative
         HW Accel Level: Standard
              Cap Flags: 0xF5F
    Min/Max Sample Rate: 1, 192000
Static/Strm HW Mix Bufs: 128, 128
 Static/Strm HW 3D Bufs: 128, 128
              HW Memory: 0
       Voice Management: No
 EAX(tm) 2.0 Listen/Src: No, No
   I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No
               Registry: OK
      Sound Test Result: Not run
---------------------
Sound Capture Devices
---------------------
            Description: SB X-Fi Audio [1000]
  Default Sound Capture: Yes
  Default Voice Capture: Yes
            Driver Name: ctaud2k.sys
         Driver Version: 6.00.0001.1375 (English)
      Driver Attributes: Final Retail
          Date and Size: 5/5/2010 21:24:24, 526296 bytes
              Cap Flags: 0x41
           Format Flags: 0xFFF
-----------
DirectMusic
-----------
        DLS Path: C:\WINDOWS\SYSTEM32\drivers\GM.DLS
     DLS Version: 1.00.0016.0002
    Acceleration: Enabled
           Ports: SB X-Fi DMusic Synth [1000], Hardware (Kernel Mode), Output, DLS, Internal, Default Port
                  SB X-Fi Audio [1000], Software (Kernel Mode), Output, DLS, Internal
                  Microsoft MIDI Mapper [Emulated], Hardware (Not Kernel Mode), Output, No DLS, Internal
                  SB X-Fi Synth B [1000] [Emulated], Hardware (Not Kernel Mode), Output, No DLS, Internal
                  SB X-Fi Synth A [1000] [Emulated], Hardware (Not Kernel Mode), Output, No DLS, Internal
                  Microsoft GS Wavetable SW Synth [Emulated], Hardware (Not Kernel Mode), Output, No DLS, Internal
                  Microsoft Synthesizer, Software (Not Kernel Mode), Output, DLS, Internal
        Registry: OK
     Test Result: Not run
-------------------
DirectInput Devices
-------------------
      Device Name: Mouse
         Attached: 1
    Controller ID: n/a
Vendor/Product ID: n/a
        FF Driver: n/a
      Device Name: Keyboard
         Attached: 1
    Controller ID: n/a
Vendor/Product ID: n/a
        FF Driver: n/a
      Device Name: Gaming Keyboard
         Attached: 1
    Controller ID: 0x0
Vendor/Product ID: 0x046D, 0xC221
        FF Driver: n/a
      Device Name: Gaming Keyboard
         Attached: 1
    Controller ID: 0x0
Vendor/Product ID: 0x046D, 0xC221
        FF Driver: n/a
      Device Name: G11 Keyboard
         Attached: 1
    Controller ID: 0x0
Vendor/Product ID: 0x046D, 0xC225
        FF Driver: n/a