FSX Error

[cbrown]

Problem signature:
  Problem Event Name:      APPCRASH
  Application Name:      fsx.exe
  Application Version:      10.0.61355.0
  Application Timestamp:      4643ee0a
  Fault Module Name:      g3d.dll
  Fault Module Version:      10.0.61355.0
  Fault Module Timestamp:      4643f2a8
  Exception Code:      c0000005
  Exception Offset:      00076c50
  OS Version:      6.1.7600.2.0.0.768.3
  Locale ID:      1033

Additional information about the problem:
  LCID:      1033

My Specs
Intel(R) Core(TM) i7 CPU  920@2.67GHz
RAM 9.00GB
64-bit operation system
Graphics Card Navida 260




I keep getting this error anyone know what it is ?