I try to open the demo but it pops up with this message
…WARNING: could not set the given mode (4)
…setting mode 4: 800 600 FS
…using colorsbits of 16
…calling CDS: ok
…created window@0,0 (800x600)
Initializing OpenGL driver
…getting DC: succeeded
…GLW_ChoosePFD( 16, 16, 0 )
…35 PFDs found
…GLW_ChoosePFD failed
…failed to find an appropriate PIXELFORMAT
…restoring display settings
…WARNING: could not set the given mode (3)
…shutting down QGL
…unloading OpenGL DLL
----- CL_Shutdown -----
RE_Shutdown( 1 )
Hunk_Clear: reset the hunk ok
GLW_StartOpenGL() - could not load OpenGL subsystem
Im not good with computers so could you explain to me how to fix this in lamen terms!!!