How do I remove and replace this video card?

• GeForce 6800 Ultra vertex processing
  • Full Support for Shader Model 3.0 / Microsoft® DirectX® 9.0c
  • Displacement mapping
  • Vertex processing can access texture
  • Dynamic flow control
  • Branching, call and return
  • Vertex frequency stream divider
• GeForce 6800 Ultra pixel processing
  • Full support for Shader Model 3.0 / DirectX 9.0c
  • 65,536 instruction pixel shader programs
  • Flow control - loops and branching
  • Highest precision pixel shading - native, optimized FP32 processing
  • Flexible data type support - FP32, FP16, FX12 operand formats
  • Multiple render target support
  • Output to 4 destination color surfaces plus 1 depth surface
  • 4xFP32 per pixel, per surface
• GeForce 6800 Ultra video processing
  • High-quality video
  • Motion adaptive de-interlacing
  • High quality scaling and filtering
  • Video de-blocking
  • High quality VMR - de-interlacing / scaling
  • Transport stream handling
  • SDTV output
  • HDCP and HDMI support
  • Complete PVR solution
  • Hardware audio/video synchronization
  • MPEG 1/2/4 encode/decode
  • MPEG-2 iDCT and VLD compliant with DirectX VA
  • WMV9 decode acceleration
• GeForce 6800 Ultra display
  • High-precision scanout - 64-bit floating point display
  • 2+ Integrated TMDS/LVDS transmitters
  • Integrated HDCP/HDMI support
• GeForce 6800 Ultra bus interface
  • Fast GPU to host transfers
  • Error tolerant bus interface
• 0.13 micron process technology for higher levels of integration and higher operating clock speeds
• Advanced thermal management and thermal monitoring
• Comprehensive Microsoft DirectX 9.0c (and lower) and OpenGL 1.4 (and earlier) support
• DirectX and S3TC texture compression