DEMO ERROR; Doesn't Work For Me

[SixXxShooTeR]

Manufacturer: Dell Inc.
Processor: Intel(R) Pentium(R) D CPU 2.80GHz (2 CPUs), ~2.8GHz
Memory: 3070MB RAM
Hard Drive: 244 GB
Video Card: Radeon X1900 GT


Error BELOW ------>

couldn't exec 'etqwconfig.cfg'
execing 'localization/english/defaultbinds.cfg'
couldn't exec 'etqwbinds.cfg'
execing 'autoexec.cfg'
Vendor:1002 Device:724B
Detected
2 2.79 GHz CPU
3072 MB of System memory
256 MB of Video memory on an optimal video architecture

This system qualifies for High quality!
execing 'specs/highspec.dat'
execing 'specs/highspec_cpu.dat'
execing 'specs/highspec_gamedetail.dat'
execing 'specs/highspec_gpu.dat'
execing 'specs/highspec_gpudetail.dat'
execing 'specs/highspec_lighting.dat'
execing 'specs/highspec_foliage.dat'
Vendor:1002 Device:724B
execing 'specs/highspec_gpu.dat'
execing 'specs/highspec_gpudetail.dat'
execing 'specs/highspec_foliage.dat'
Initializing OpenGL subsystem
...registered window class
...registered fake window class
...calling LoadLibrary( 'opengl32' ): succeeded
...initializing QGL
------- Initializing renderSystem --------
----- R_InitOpenGL -----
...using GL_ARB_multitexture
...using GL_ARB_texture_cube_map
X..GL_ARB_texture_non_power_of_two not found
...using GL_ARB_texture_compression
...using GL_EXT_texture_compression_s3tc
...using GL_EXT_texture_filter_anisotropic
maxTextureAnisotropy: 16.000000
...using GL_1.4_texture_lod_bias
X..GL_EXT_shared_texture_palette not found
...using GL_EXT_texture3D
...using GL_EXT_texture_rectangle
...using GL_ARB_texture_rectangle
...using GL_EXT_stencil_wrap
X..GL_EXT_stencil_two_side not found
...using GL_ATI_separate_stencil
...using GL_ARB_vertex_buffer_object
...using GL_ARB_vertex_program
...using GL_ARB_fragment_program
X..GL_EXT_depth_bounds_test not found
...using GL_ARB_point_sprite
X..GL_ARB_occlusion_query not found
...using GL_EXT_framebuffer_object
X..GL_EXT_packed_depth_stencil not found
...using GL_EXT_blend_minmax
...using GL_ARB_multisample
...using GL_ARB_shader_objects
...using GL_ARB_vertex_shader
...using GL_ARB_fragment_shader
X..GL_ARB_fragment_program_shadow not found
...using GL_ARB_shadow
...using GL_ARB_depth_texture
X..GL_EXT_gpu_program_parameters not found
idFile_Permanent::Write: 0 bytes written to diag.txt
idFile_Permanent::Write: 0 bytes written to diag.txt
idFile_Permanent::Write: 0 bytes written to diag.txt
idFile_Permanent::Write: 0 bytes written to diag.txt
idFile_Permanent::Write: 0 bytes written to diag.txt
idFile_Permanent::Write: 0 bytes written to diag.txt
********************
ERROR: The current video card / driver combination does not support the necessary features: GL_ARB_occlusion_query
********************
--------------- BSE Shutdown ----------------
---------------------------------------------
Shutting down OpenGL subsystem
...releasing DC
...destroying window
...resetting display
...shutting down QGL
...unloading OpenGL DLL
idRenderSystem::Shutdown()
Shutting down performance queries
Error during initialization



ANYONE KNOW HOW TO HELP ME?